#1B5281#1B5281

#1B5281 is a dark, moderate cyan. Relative luminance 0.079; OKLCH L 42.7% C 0.097 H 248.3°. Best body text is #FFFFFF at 8.17:1 contrast (WCAG AA passes).

Color values

HEX	#1B5281
RGB	rgb(27, 82, 129)
HSL	hsl(208, 65%, 31%)
HSV	hsv(208, 79%, 51%)
CMYK	cmyk(79.1%, 36.4%, 0%, 49.4%)
CIE-LAB	lab(33.67, -0.31, -31.52)
CIE-LCH	lch(33.67, 31.52, 269.43°)
OKLab	oklab(42.73% -0.0357 -0.0897)
OKLCH	oklch(42.73% 0.097 248.3)
XYZ	xyz(7.4302, 7.8517, 21.8886)
Luminance	0.0785 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5281 #814A1B

analogous

#1B817D #1B5281 #1B1F81

triadic

#1B5281 #811B52 #52811B

tetradic

#1B5281 #7D1B81 #814A1B #1F811B

square

#1B5281 #7D1B81 #814A1B #1F811B

split-complementary

#1B5281 #811B1F #817D1B

monochromatic

#06121C #10324E #1B5281 #2672B4 #3F91D7

Accessibility & contrast

On white

8.17

#1B5281 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#1B5281 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5281

8.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5281	#FFFFFF	#000000	##FFFFFF
##1B5281	1.00	8.17	2.57	8.17
#FFFFFF	8.17	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C5483

Deuteranopia (green-blind)

#2D4B80

Tritanopia (blue-blind)

#005D63

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1b5281;
/* rgb */ color: rgb(27, 82, 129);
/* oklch */ color: oklch(42.7% 0.097 248.3);

Tailwind

colors: {
  custom: {
    50: '#6882a6',
    500: '#1b5281',
    950: '#000000',
  },
}

SCSS

$custom: #1b5281;
$custom-light: #6882a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5281",
  "rgb": {
    "r": 27,
    "g": 82,
    "b": 129
  },
  "hsl": {
    "h": 207.647,
    "s": 65.385,
    "l": 30.588
  },
  "oklch": {
    "l": 0.4273,
    "c": 0.09652,
    "h": 248.3
  },
  "luminance": 0.07853
}

Semantic roles & 50–950 ramp

primary

#1B5281

secondary

#B57743

accent

#8D3FE8

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1B5281

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

Preview Lab → · Contrast checker → · Palette generator →