#1D3A87#1D3A87

#1D3A87 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.6% C 0.134 H 264.9°. Best body text is #FFFFFF at 10.46:1 contrast (WCAG AA passes).

Color values

HEX	#1D3A87
RGB	rgb(29, 58, 135)
HSL	hsl(224, 65%, 32%)
HSV	hsv(224, 79%, 53%)
CMYK	cmyk(78.5%, 57%, 0%, 47.1%)
CIE-LAB	lab(26.84, 18.68, -46.20)
CIE-LCH	lch(26.84, 49.83, 292.02°)
OKLab	oklab(37.6% -0.0118 -0.1332)
OKLCH	oklch(37.6% 0.134 264.9)
XYZ	xyz(6.3914, 5.0359, 23.5521)
Luminance	0.0504 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3A87 #876A1D

analogous

#1D6F87 #1D3A87 #351D87

triadic

#1D3A87 #871D3A #3A871D

tetradic

#1D3A87 #871D6F #876A1D #1D8735

square

#1D3A87 #871D6F #876A1D #1D8735

split-complementary

#1D3A87 #87351D #6F871D

monochromatic

#070F22 #122455 #1D3A87 #2850B9 #476ED7

Accessibility & contrast

On white

10.46

#1D3A87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#1D3A87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3A87

10.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3A87	#FFFFFF	#000000	##FFFFFF
##1D3A87	1.00	10.46	2.01	10.46
#FFFFFF	10.46	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458A

Deuteranopia (green-blind)

#003B85

Tritanopia (blue-blind)

#004D5A

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1d3a87;
/* rgb */ color: rgb(29, 58, 135);
/* oklch */ color: oklch(37.6% 0.134 264.9);

Tailwind

colors: {
  custom: {
    50: '#6a6fab',
    500: '#1d3a87',
    950: '#000000',
  },
}

SCSS

$custom: #1d3a87;
$custom-light: #6a6fab;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3a87",
  "rgb": {
    "r": 29,
    "g": 58,
    "b": 135
  },
  "hsl": {
    "h": 223.585,
    "s": 64.634,
    "l": 32.157
  },
  "oklch": {
    "l": 0.37605,
    "c": 0.13376,
    "h": 264.9
  },
  "luminance": 0.05037
}

Semantic roles & 50–950 ramp

primary

#1D3A87

secondary

#B99A46

accent

#BA40E8

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #1D3A87

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

Preview Lab → · Contrast checker → · Palette generator →