#1D5183#1D5183

#1D5183 is a dark, moderate cyan. Relative luminance 0.078; OKLCH L 42.7% C 0.100 H 250.7°. Best body text is #FFFFFF at 8.21:1 contrast (WCAG AA passes).

Color values

HEX	#1D5183
RGB	rgb(29, 81, 131)
HSL	hsl(209, 64%, 31%)
HSV	hsv(209, 78%, 51%)
CMYK	cmyk(77.9%, 38.2%, 0%, 48.6%)
CIE-LAB	lab(33.53, 1.39, -32.98)
CIE-LCH	lch(33.53, 33.01, 272.42°)
OKLab	oklab(42.67% -0.033 -0.0939)
OKLCH	oklch(42.67% 0.1 250.7)
XYZ	xyz(7.5443, 7.7839, 22.5732)
Luminance	0.0779 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D5183 #834F1D

analogous

#1D8382 #1D5183 #1D1E83

triadic

#1D5183 #831D51 #51831D

tetradic

#1D5183 #821D83 #834F1D #1E831D

square

#1D5183 #821D83 #834F1D #1E831D

split-complementary

#1D5183 #831D1E #83821D

monochromatic

#07131F #123251 #1D5183 #2870B5 #458FD6

Accessibility & contrast

On white

8.21

#1D5183 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#1D5183 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D5183

8.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D5183	#FFFFFF	#000000	##FFFFFF
##1D5183	1.00	8.21	2.56	8.21
#FFFFFF	8.21	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A5485

Deuteranopia (green-blind)

#2A4B82

Tritanopia (blue-blind)

#005D63

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1d5183;
/* rgb */ color: rgb(29, 81, 131);
/* oklch */ color: oklch(42.7% 0.100 250.7);

Tailwind

colors: {
  custom: {
    50: '#6981a7',
    500: '#1d5183',
    950: '#000000',
  },
}

SCSS

$custom: #1d5183;
$custom-light: #6981a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1d5183",
  "rgb": {
    "r": 29,
    "g": 81,
    "b": 131
  },
  "hsl": {
    "h": 209.412,
    "s": 63.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.42671,
    "c": 0.09954,
    "h": 250.7
  },
  "luminance": 0.07785
}

Semantic roles & 50–950 ramp

primary

#1D5183

secondary

#B67D46

accent

#9241E7

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1D5183

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

Preview Lab → · Contrast checker → · Palette generator →