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#1B4C52rgb(27, 76, 82)hsl(187, 50%, 21%)PUT IT INTO PRACTICE
Try it with another color before you commit.
A little color. A whole lot of possibility.
Selected text: #1B4C52Normal text: AA 4.5:1, AAA 7:1. Large text: AA 3:1 (24px regular or about 19px bold).
Results use the exact pair, at full opacity. WCAG contrast guidance ↗
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HEX
#1b4c52
RGB
rgb(27, 76, 82)
HSL
hsl(187, 50%, 21%)
OKLCH
oklch(0.3863 0.0528 206.32)
CMYK
cmyk(67%, 7%, 0%, 68%)
CSS variable
--color-1b4c52: #1b4c52;
CMYK is an approximate reference; print output depends on the color profile. HSV and CMYK are not CSS color functions.
OKLCH
Generated in OKLCH from this hex. Not an official Tailwind scale unless the hex itself is a Tailwind token.
Palette
Full scale from light tints through the base color into deep shades
Palette
Mixed toward white — soft backgrounds and highlights
Palette
Mixed toward black — depth, text, and emphasis
Palette
Mixed toward neutral grey — muted UI surfaces
Harmony
Opposite on the color wheel for contrast
Harmony
Neighbors that sit comfortably together
Harmony
Evenly spaced triad for vibrant sets
Harmony
Base plus two accents beside the complement
Harmony
Same hue, varied lightness and saturation
Export
:root {
--color1b4c52-1: #1b4c52;
}Design systems
An arbitrary HEX is not an official Tailwind, Material, or Bootstrap color. Distance is CIEDE2000.
Nearest Tailwind color
teal-900
Very different · ΔE 5.85 · #134E4A
Nearest CSS named color
DarkSlateGray
Noticeably different · ΔE 3.95 · #2F4F4F
Nearest Material color
cyan-900
Very different · ΔE 7.62 · #006064
Nearest Bootstrap color
dark
Very different · ΔE 17.09 · #212529
Using this color
#1B4C52 (#1b4c52) sits in the cyan family at about 187° hue, 50% saturation, and 21% lightness. Contrast is 9.54:1 on white and 2.2:1 on black, so white labels read more clearly on the swatch itself. Nearest Tailwind token: teal-900 (approximation unless the hex is an official scale stop).
Sensible jobs for this swatch
On a black or near-black UI, #1b4c52 is 2.2:1. Prefer it as a fill, border, or large heading rather than 16px copy.
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.
Related
Nearby colors from the library by perceptual distance