#1B5182#1B5182

#1B5182 is a dark, moderate cyan. Relative luminance 0.077; OKLCH L 42.5% C 0.099 H 249.6°. Best body text is #FFFFFF at 8.25:1 contrast (WCAG AA passes).

Color values

HEX	#1B5182
RGB	rgb(27, 81, 130)
HSL	hsl(209, 66%, 31%)
HSV	hsv(209, 79%, 51%)
CMYK	cmyk(79.2%, 37.7%, 0%, 49%)
CIE-LAB	lab(33.41, 0.73, -32.55)
CIE-LCH	lch(33.41, 32.56, 271.29°)
OKLab	oklab(42.54% -0.0344 -0.0927)
OKLCH	oklch(42.54% 0.099 249.6)
XYZ	xyz(7.4222, 7.7287, 22.2154)
Luminance	0.0773 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5182 #824C1B

analogous

#1B827F #1B5182 #1B1D82

triadic

#1B5182 #821B51 #51821B

tetradic

#1B5182 #7F1B82 #824C1B #1D821B

square

#1B5182 #7F1B82 #824C1B #1D821B

split-complementary

#1B5182 #821B1D #827F1B

monochromatic

#06121D #10314F #1B5182 #2671B5 #408FD7

Accessibility & contrast

On white

8.25

#1B5182 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#1B5182 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5182

8.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5182	#FFFFFF	#000000	##FFFFFF
##1B5182	1.00	8.25	2.55	8.25
#FFFFFF	8.25	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A5484

Deuteranopia (green-blind)

#2B4A81

Tritanopia (blue-blind)

#005D63

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1b5182;
/* rgb */ color: rgb(27, 81, 130);
/* oklch */ color: oklch(42.5% 0.099 249.6);

Tailwind

colors: {
  custom: {
    50: '#6881a6',
    500: '#1b5182',
    950: '#000000',
  },
}

SCSS

$custom: #1b5182;
$custom-light: #6881a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5182",
  "rgb": {
    "r": 27,
    "g": 81,
    "b": 130
  },
  "hsl": {
    "h": 208.544,
    "s": 65.605,
    "l": 30.784
  },
  "oklch": {
    "l": 0.42543,
    "c": 0.09889,
    "h": 249.6
  },
  "luminance": 0.0773
}

Semantic roles & 50–950 ramp

primary

#1B5182

secondary

#B67A43

accent

#903FE9

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1B5182

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →