#1D3C87#1D3C87

#1D3C87 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.0% C 0.131 H 264.2°. Best body text is #FFFFFF at 10.25:1 contrast (WCAG AA passes).

Color values

HEX	#1D3C87
RGB	rgb(29, 60, 135)
HSL	hsl(222, 65%, 32%)
HSV	hsv(222, 79%, 53%)
CMYK	cmyk(78.5%, 55.6%, 0%, 47.1%)
CIE-LAB	lab(27.41, 17.29, -45.27)
CIE-LCH	lch(27.41, 48.46, 290.90°)
OKLab	oklab(38.04% -0.0134 -0.1305)
OKLCH	oklch(38.04% 0.131 264.2)
XYZ	xyz(6.4942, 5.2415, 23.5864)
Luminance	0.0524 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3C87 #87681D

analogous

#1D7187 #1D3C87 #331D87

triadic

#1D3C87 #871D3C #3C871D

tetradic

#1D3C87 #871D71 #87681D #1D8733

square

#1D3C87 #871D71 #87681D #1D8733

split-complementary

#1D3C87 #87331D #71871D

monochromatic

#070F22 #122655 #1D3C87 #2852B9 #4771D7

Accessibility & contrast

On white

10.25

#1D3C87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#1D3C87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3C87

10.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3C87	#FFFFFF	#000000	##FFFFFF
##1D3C87	1.00	10.25	2.05	10.25
#FFFFFF	10.25	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00468A

Deuteranopia (green-blind)

#003C86

Tritanopia (blue-blind)

#004E5B

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1d3c87;
/* rgb */ color: rgb(29, 60, 135);
/* oklch */ color: oklch(38.0% 0.131 264.2);

Tailwind

colors: {
  custom: {
    50: '#6a71ab',
    500: '#1d3c87',
    950: '#000000',
  },
}

SCSS

$custom: #1d3c87;
$custom-light: #6a71ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3c87",
  "rgb": {
    "r": 29,
    "g": 60,
    "b": 135
  },
  "hsl": {
    "h": 222.453,
    "s": 64.634,
    "l": 32.157
  },
  "oklch": {
    "l": 0.3804,
    "c": 0.13114,
    "h": 264.2
  },
  "luminance": 0.05242
}

Semantic roles & 50–950 ramp

primary

#1D3C87

secondary

#B99846

accent

#B740E8

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #1D3C87

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

Preview Lab → · Contrast checker → · Palette generator →