#1D4C81#1D4C81

#1D4C81 is a dark, moderate cyan. Relative luminance 0.070; OKLCH L 41.3% C 0.102 H 253.8°. Best body text is #FFFFFF at 8.74:1 contrast (WCAG AA passes).

Color values

HEX	#1D4C81
RGB	rgb(29, 76, 129)
HSL	hsl(212, 63%, 31%)
HSV	hsv(212, 78%, 51%)
CMYK	cmyk(77.5%, 41.1%, 0%, 49.4%)
CIE-LAB	lab(31.84, 3.90, -34.43)
CIE-LCH	lch(31.84, 34.65, 276.46°)
OKLab	oklab(41.31% -0.0286 -0.0983)
OKLCH	oklch(41.31% 0.102 253.8)
XYZ	xyz(7.0521, 7.0143, 21.7468)
Luminance	0.0702 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4C81 #81521D

analogous

#1D7E81 #1D4C81 #201D81

triadic

#1D4C81 #811D4C #4C811D

tetradic

#1D4C81 #811D7E #81521D #1D8120

square

#1D4C81 #811D7E #81521D #1D8120

split-complementary

#1D4C81 #81201D #7E811D

monochromatic

#07111D #122F4F #1D4C81 #2869B3 #4488D5

Accessibility & contrast

On white

8.74

#1D4C81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#1D4C81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4C81

8.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4C81	#FFFFFF	#000000	##FFFFFF
##1D4C81	1.00	8.74	2.40	8.74
#FFFFFF	8.74	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#335083

Deuteranopia (green-blind)

#234780

Tritanopia (blue-blind)

#005860

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1d4c81;
/* rgb */ color: rgb(29, 76, 129);
/* oklch */ color: oklch(41.3% 0.102 253.8);

Tailwind

colors: {
  custom: {
    50: '#687da6',
    500: '#1d4c81',
    950: '#000000',
  },
}

SCSS

$custom: #1d4c81;
$custom-light: #687da6;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4c81",
  "rgb": {
    "r": 29,
    "g": 76,
    "b": 129
  },
  "hsl": {
    "h": 211.8,
    "s": 63.291,
    "l": 30.98
  },
  "oklch": {
    "l": 0.41312,
    "c": 0.10234,
    "h": 253.8
  },
  "luminance": 0.07015
}

Semantic roles & 50–950 ramp

primary

#1D4C81

secondary

#B48046

accent

#9941E6

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #1D4C81

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

Preview Lab → · Contrast checker → · Palette generator →