#1D3E8D#1D3E8D

#1D3E8D is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.0% C 0.137 H 264.0°. Best body text is #FFFFFF at 9.88:1 contrast (WCAG AA passes).

Color values

HEX	#1D3E8D
RGB	rgb(29, 62, 141)
HSL	hsl(222, 66%, 33%)
HSV	hsv(222, 79%, 55%)
CMYK	cmyk(79.4%, 56%, 0%, 44.7%)
CIE-LAB	lab(28.46, 18.32, -47.29)
CIE-LCH	lch(28.46, 50.71, 291.17°)
OKLab	oklab(38.98% -0.0144 -0.1364)
OKLCH	oklch(38.98% 0.137 264)
XYZ	xyz(7.0353, 5.6287, 25.9098)
Luminance	0.0563 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3E8D #8D6C1D

analogous

#1D768D #1D3E8D #341D8D

triadic

#1D3E8D #8D1D3E #3E8D1D

tetradic

#1D3E8D #8D1D76 #8D6C1D #1D8D34

square

#1D3E8D #8D1D76 #8D6C1D #1D8D34

split-complementary

#1D3E8D #8D341D #768D1D

monochromatic

#081127 #13285A #1D3E8D #2754C0 #4B75DA

Accessibility & contrast

On white

9.88

#1D3E8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#1D3E8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3E8D

9.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3E8D	#FFFFFF	#000000	##FFFFFF
##1D3E8D	1.00	9.88	2.13	9.88
#FFFFFF	9.88	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004890

Deuteranopia (green-blind)

#003E8B

Tritanopia (blue-blind)

#00515F

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1d3e8d;
/* rgb */ color: rgb(29, 62, 141);
/* oklch */ color: oklch(39.0% 0.137 264.0);

Tailwind

colors: {
  custom: {
    50: '#6c72af',
    500: '#1d3e8d',
    950: '#000000',
  },
}

SCSS

$custom: #1d3e8d;
$custom-light: #6c72af;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3e8d",
  "rgb": {
    "r": 29,
    "g": 62,
    "b": 141
  },
  "hsl": {
    "h": 222.321,
    "s": 65.882,
    "l": 33.333
  },
  "oklch": {
    "l": 0.38977,
    "c": 0.13713,
    "h": 264
  },
  "luminance": 0.0563
}

Semantic roles & 50–950 ramp

primary

#1D3E8D

secondary

#BC9A4A

accent

#B73FE9

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #1D3E8D

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

Preview Lab → · Contrast checker → · Palette generator →