#558E91

Accessibility

5.66:1

Vs white / black

3.71:1 · 5.66:1

Sources

Library color

Codes

Formats

HEX

#558e91

RGB

rgb(85, 142, 145)

RGBA

rgba(85, 142, 145, 1)

HSL

hsl(183, 26%, 45%)

HSLA

hsla(183, 26%, 45%, 1)

HSV

hsv(183, 41%, 57%)

LAB

lab(55.4% -17.85 -7.48)

LCH

lch(55.4% 19.35 202.74)

OKLAB

oklab(0.6088 -0.0564 -0.0206)

OKLCH

oklch(0.6088 0.06 200.06)

XYZ

xyz(18.53, 23.32, 30.31)

CMYK

cmyk(41%, 2%, 0%, 43%)

CSS

color: #558e91;

CSS variable

--color-558e91: #558e91;

SCSS

$color-558e91: #558e91;

JavaScript

const color = "#558e91";

TypeScript

const color: string = "#558e91";

React

style={{ backgroundColor: "#558e91" }}

JSON

{ "hex": "#558e91", "rgb": { "r": 85, "g": 142, "b": 145 }, "oklch": "oklch(0.6088 0.06 200.06)" }

Export

Developer code

css

:root {
  --#558e91-1: #558e91;
}

Design systems

Nearest official tokens

An arbitrary HEX is not an official Tailwind, Material, or Bootstrap color. Distance is CIEDE2000.

Nearest Tailwind color

teal-600

Very different · ΔE 9.5 · #0D9488

Nearest CSS named color

CadetBlue

Very different · ΔE 5.32 · #5F9EA0

Nearest Material color

cyan-700

Very different · ΔE 7.11 · #0097A7

Nearest Bootstrap color

secondary

Very different · ΔE 15.95 · #6C757D

OKLCH

Perceptual 50–950 scale

Generated in OKLCH from this hex. Not an official Tailwind scale unless the hex itself is a Tailwind token.

50dafdff 100caf0f2 200b1dee0 30096c9cb 40074adb0 500589194 600497a7c 700386264 800284a4c 900193436 950071f20

Palette

Tints & shades

Full scale from light tints through the base color into deep shades

f1f6f6 e3eced d5e3e4 c6d9da b8d0d1 aac7c8 9cbdbf 8eb4b6 80aaad 71a1a3 63979a 558e91 4e8285 477679 406b6d 395f61 325355 2b4749 233b3c 1c2f30 152424 0e1818 070c0c

Palette

Tints

Mixed toward white — soft backgrounds and highlights

f1f6f6 e3eced d5e3e4 c6d9da b8d0d1 aac7c8 9cbdbf 8eb4b6 80aaad 71a1a3 63979a

Palette

Shades

Mixed toward black — depth, text, and emphasis

4e8285 477679 406b6d 395f61 325355 2b4749 233b3c 1c2f30 152424 0e1818 070c0c

Palette

Tones

Mixed toward neutral grey — muted UI surfaces

598d90 5c8c8e 608b8d 63898b 67888a 6b8789 6e8687 728586 758484 798283 7c8181

Harmony

Complementary

Opposite on the color wheel for contrast

#558E91Stop 1 #915855Stop 2

Harmony

Analogous

Neighbors that sit comfortably together

#559176Stop 1 #558E91Stop 2 #557091Stop 3

Harmony

Triadic

Evenly spaced triad for vibrant sets

#558E91Stop 1 #91558EStop 2 #8E9155Stop 3

Harmony

Split complementary

Base plus two accents beside the complement

#558E91Stop 1 #915570Stop 2 #917655Stop 3

Harmony

Monochromatic

Same hue, varied lightness and saturation

#263F40Stop 1 #426E70Stop 2 #5E9DA1Stop 3 #8FBBBDStop 4 #BFD8D9Stop 5

Using this color

Where #558e91 works

#558E91 (#558e91) sits in the cyan family at about 183° hue, 26% saturation, and 45% lightness. Contrast is 3.71:1 on white and 5.66:1 on black, so near-black labels read more clearly on the swatch itself. Nearest Tailwind token: teal-600 (approximation unless the hex is an official scale stop).

Sensible jobs for this swatch

supporting UI accents
large titles on light backgrounds (WCAG AA Large)
text or icons on charcoal / dark mode

Do not use #558e91 as small body text on white — 3.71:1 misses WCAG AA (4.5:1). Pair it with a darker shade from the scale below, or check pairs in the contrast checker.

Family context: Freshness, clarity, and innovation. Great for tech accents and clean digital products. Common uses still include buttons, charts, and accents in the Cyan range — always verify the pair for this exact hex in the contrast checker.

Similar & related colors

Nearby colors from the library by perceptual distance

Web Safe #669999#669999 Spectrum #4691A0#4691A0 Spectrum #328B8B#328B8B CadetBlue#5F9EA0 Spectrum #2997A3#2997A3 Spectrum #409DA5#409DA5 Spectrum #378186#378186 Web Safe #339999#339999 Chakra teal 600#319795 Spectrum #45968E#45968E Spectrum #168998#168998 Material Cyan 700#0097A7