#1D4E81#1D4E81

#1D4E81 is a dark, moderate cyan. Relative luminance 0.073; OKLCH L 41.8% C 0.100 H 252.2°. Best body text is #FFFFFF at 8.54:1 contrast (WCAG AA passes).

Color values

HEX	#1D4E81
RGB	rgb(29, 78, 129)
HSL	hsl(211, 63%, 31%)
HSV	hsv(211, 78%, 51%)
CMYK	cmyk(77.5%, 39.5%, 0%, 49.4%)
CIE-LAB	lab(32.47, 2.57, -33.43)
CIE-LCH	lch(32.47, 33.53, 274.40°)
OKLab	oklab(41.8% -0.0306 -0.0953)
OKLCH	oklch(41.8% 0.1 252.2)
XYZ	xyz(7.1920, 7.2941, 21.7935)
Luminance	0.0730 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4E81 #81501D

analogous

#1D8081 #1D4E81 #1E1D81

triadic

#1D4E81 #811D4E #4E811D

tetradic

#1D4E81 #811D80 #81501D #1D811E

square

#1D4E81 #811D80 #81501D #1D811E

split-complementary

#1D4E81 #811E1D #80811D

monochromatic

#07121D #12304F #1D4E81 #286CB3 #448BD5

Accessibility & contrast

On white

8.54

#1D4E81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#1D4E81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4E81

8.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4E81	#FFFFFF	#000000	##FFFFFF
##1D4E81	1.00	8.54	2.46	8.54
#FFFFFF	8.54	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#365183

Deuteranopia (green-blind)

#274880

Tritanopia (blue-blind)

#005A61

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1d4e81;
/* rgb */ color: rgb(29, 78, 129);
/* oklch */ color: oklch(41.8% 0.100 252.2);

Tailwind

colors: {
  custom: {
    50: '#687fa6',
    500: '#1d4e81',
    950: '#000000',
  },
}

SCSS

$custom: #1d4e81;
$custom-light: #687fa6;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4e81",
  "rgb": {
    "r": 29,
    "g": 78,
    "b": 129
  },
  "hsl": {
    "h": 210.6,
    "s": 63.291,
    "l": 30.98
  },
  "oklch": {
    "l": 0.41803,
    "c": 0.10008,
    "h": 252.2
  },
  "luminance": 0.07295
}

Semantic roles & 50–950 ramp

primary

#1D4E81

secondary

#B47E46

accent

#9641E6

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1D4E81

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

Preview Lab → · Contrast checker → · Palette generator →