#1D3D8A#1D3D8A

#1D3D8A is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.5% C 0.134 H 264.1°. Best body text is #FFFFFF at 10.06:1 contrast (WCAG AA passes).

Color values

HEX	#1D3D8A
RGB	rgb(29, 61, 138)
HSL	hsl(222, 65%, 33%)
HSV	hsv(222, 79%, 54%)
CMYK	cmyk(79%, 55.8%, 0%, 45.9%)
CIE-LAB	lab(27.93, 17.80, -46.28)
CIE-LCH	lch(27.93, 49.59, 291.04°)
OKLab	oklab(38.51% -0.0139 -0.1334)
OKLCH	oklch(38.51% 0.134 264.1)
XYZ	xyz(6.7613, 5.4329, 24.7321)
Luminance	0.0543 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3D8A #8A6A1D

analogous

#1D748A #1D3D8A #331D8A

triadic

#1D3D8A #8A1D3D #3D8A1D

tetradic

#1D3D8A #8A1D74 #8A6A1D #1D8A33

square

#1D3D8A #8A1D74 #8A6A1D #1D8A33

split-complementary

#1D3D8A #8A331D #748A1D

monochromatic

#081025 #122757 #1D3D8A #2853BD #4973D9

Accessibility & contrast

On white

10.06

#1D3D8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#1D3D8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3D8A

10.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3D8A	#FFFFFF	#000000	##FFFFFF
##1D3D8A	1.00	10.06	2.09	10.06
#FFFFFF	10.06	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00478D

Deuteranopia (green-blind)

#003D88

Tritanopia (blue-blind)

#00505D

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1d3d8a;
/* rgb */ color: rgb(29, 61, 138);
/* oklch */ color: oklch(38.5% 0.134 264.1);

Tailwind

colors: {
  custom: {
    50: '#6b72ad',
    500: '#1d3d8a',
    950: '#000000',
  },
}

SCSS

$custom: #1d3d8a;
$custom-light: #6b72ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3d8a",
  "rgb": {
    "r": 29,
    "g": 61,
    "b": 138
  },
  "hsl": {
    "h": 222.385,
    "s": 65.269,
    "l": 32.745
  },
  "oklch": {
    "l": 0.38509,
    "c": 0.13414,
    "h": 264.1
  },
  "luminance": 0.05434
}

Semantic roles & 50–950 ramp

primary

#1D3D8A

secondary

#BB9948

accent

#B740E8

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #1D3D8A

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

Preview Lab → · Contrast checker → · Palette generator →