#1D3182#1D3182

#1D3182 is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.3% C 0.138 H 267.8°. Best body text is #FFFFFF at 11.58:1 contrast (WCAG AA passes).

Color values

HEX	#1D3182
RGB	rgb(29, 49, 130)
HSL	hsl(228, 64%, 31%)
HSV	hsv(228, 78%, 51%)
CMYK	cmyk(77.7%, 62.3%, 0%, 49%)
CIE-LAB	lab(23.90, 22.97, -47.86)
CIE-LCH	lch(23.90, 53.09, 295.63°)
OKLab	oklab(35.27% -0.0052 -0.1383)
OKLCH	oklch(35.27% 0.138 267.8)
XYZ	xyz(5.6329, 4.0689, 21.6033)
Luminance	0.0407 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3182 #826E1D

analogous

#1D6382 #1D3182 #3B1D82

triadic

#1D3182 #821D31 #31821D

tetradic

#1D3182 #821D63 #826E1D #1D823B

square

#1D3182 #821D63 #826E1D #1D823B

split-complementary

#1D3182 #823B1D #63821D

monochromatic

#070B1E #121E50 #1D3182 #2844B4 #4461D5

Accessibility & contrast

On white

11.58

#1D3182 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#1D3182 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3182

11.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3182	#FFFFFF	#000000	##FFFFFF
##1D3182	1.00	11.58	1.81	11.58
#FFFFFF	11.58	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E85

Deuteranopia (green-blind)

#003480

Tritanopia (blue-blind)

#004654

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1d3182;
/* rgb */ color: rgb(29, 49, 130);
/* oklch */ color: oklch(35.3% 0.138 267.8);

Tailwind

colors: {
  custom: {
    50: '#6a68a7',
    500: '#1d3182',
    950: '#000000',
  },
}

SCSS

$custom: #1d3182;
$custom-light: #6a68a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3182",
  "rgb": {
    "r": 29,
    "g": 49,
    "b": 130
  },
  "hsl": {
    "h": 228.119,
    "s": 63.522,
    "l": 31.176
  },
  "oklch": {
    "l": 0.35274,
    "c": 0.13836,
    "h": 267.8
  },
  "luminance": 0.0407
}

Semantic roles & 50–950 ramp

primary

#1D3182

secondary

#B59F46

accent

#C641E7

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1D3182

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

Preview Lab → · Contrast checker → · Palette generator →