#1D3883#1D3883

#1D3883 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 36.8% C 0.131 H 265.4°. Best body text is #FFFFFF at 10.79:1 contrast (WCAG AA passes).

Color values

HEX	#1D3883
RGB	rgb(29, 56, 131)
HSL	hsl(224, 64%, 31%)
HSV	hsv(224, 78%, 51%)
CMYK	cmyk(77.9%, 57.3%, 0%, 48.6%)
CIE-LAB	lab(25.94, 18.47, -45.16)
CIE-LCH	lch(25.94, 48.79, 292.25°)
OKLab	oklab(36.83% -0.0105 -0.1302)
OKLCH	oklch(36.83% 0.131 265.4)
XYZ	xyz(6.0162, 4.7276, 22.0638)
Luminance	0.0473 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3883 #83681D

analogous

#1D6B83 #1D3883 #351D83

triadic

#1D3883 #831D38 #38831D

tetradic

#1D3883 #831D6B #83681D #1D8335

square

#1D3883 #831D6B #83681D #1D8335

split-complementary

#1D3883 #83351D #6B831D

monochromatic

#070D1F #122351 #1D3883 #284DB5 #456BD6

Accessibility & contrast

On white

10.79

#1D3883 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#1D3883 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3883

10.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3883	#FFFFFF	#000000	##FFFFFF
##1D3883	1.00	10.79	1.95	10.79
#FFFFFF	10.79	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004286

Deuteranopia (green-blind)

#003982

Tritanopia (blue-blind)

#004A57

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1d3883;
/* rgb */ color: rgb(29, 56, 131);
/* oklch */ color: oklch(36.8% 0.131 265.4);

Tailwind

colors: {
  custom: {
    50: '#696ea8',
    500: '#1d3883',
    950: '#000000',
  },
}

SCSS

$custom: #1d3883;
$custom-light: #696ea8;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3883",
  "rgb": {
    "r": 29,
    "g": 56,
    "b": 131
  },
  "hsl": {
    "h": 224.118,
    "s": 63.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.36832,
    "c": 0.13062,
    "h": 265.4
  },
  "luminance": 0.04728
}

Semantic roles & 50–950 ramp

primary

#1D3883

secondary

#B69846

accent

#BB41E7

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #1D3883

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

Preview Lab → · Contrast checker → · Palette generator →