#1D3D87#1D3D87

#1D3D87 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.3% C 0.130 H 263.7°. Best body text is #FFFFFF at 10.15:1 contrast (WCAG AA passes).

Color values

HEX	#1D3D87
RGB	rgb(29, 61, 135)
HSL	hsl(222, 65%, 32%)
HSV	hsv(222, 79%, 53%)
CMYK	cmyk(78.5%, 54.8%, 0%, 47.1%)
CIE-LAB	lab(27.70, 16.59, -44.80)
CIE-LCH	lch(27.70, 47.77, 290.32°)
OKLab	oklab(38.26% -0.0142 -0.1291)
OKLCH	oklch(38.26% 0.13 263.7)
XYZ	xyz(6.5471, 5.3472, 23.6040)
Luminance	0.0535 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3D87 #87671D

analogous

#1D7287 #1D3D87 #321D87

triadic

#1D3D87 #871D3D #3D871D

tetradic

#1D3D87 #871D72 #87671D #1D8732

square

#1D3D87 #871D72 #87671D #1D8732

split-complementary

#1D3D87 #87321D #72871D

monochromatic

#070F22 #122655 #1D3D87 #2854B9 #4773D7

Accessibility & contrast

On white

10.15

#1D3D87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#1D3D87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3D87

10.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3D87	#FFFFFF	#000000	##FFFFFF
##1D3D87	1.00	10.15	2.07	10.15
#FFFFFF	10.15	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#04478A

Deuteranopia (green-blind)

#003D86

Tritanopia (blue-blind)

#004F5C

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1d3d87;
/* rgb */ color: rgb(29, 61, 135);
/* oklch */ color: oklch(38.3% 0.130 263.7);

Tailwind

colors: {
  custom: {
    50: '#6a72ab',
    500: '#1d3d87',
    950: '#000000',
  },
}

SCSS

$custom: #1d3d87;
$custom-light: #6a72ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3d87",
  "rgb": {
    "r": 29,
    "g": 61,
    "b": 135
  },
  "hsl": {
    "h": 221.887,
    "s": 64.634,
    "l": 32.157
  },
  "oklch": {
    "l": 0.3826,
    "c": 0.12983,
    "h": 263.7
  },
  "luminance": 0.05348
}

Semantic roles & 50–950 ramp

primary

#1D3D87

secondary

#B99746

accent

#B540E8

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #1D3D87

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

Preview Lab → · Contrast checker → · Palette generator →