#1D3287#1D3287

#1D3287 is a dark, vivid blue. Relative luminance 0.043; OKLCH L 35.9% C 0.144 H 267.6°. Best body text is #FFFFFF at 11.30:1 contrast (WCAG AA passes).

Color values

HEX	#1D3287
RGB	rgb(29, 50, 135)
HSL	hsl(228, 65%, 32%)
HSV	hsv(228, 79%, 53%)
CMYK	cmyk(78.5%, 63%, 0%, 47.1%)
CIE-LAB	lab(24.61, 24.25, -49.83)
CIE-LCH	lch(24.61, 55.41, 295.95°)
OKLab	oklab(35.94% -0.0059 -0.144)
OKLCH	oklch(35.94% 0.144 267.6)
XYZ	xyz(6.0189, 4.2910, 23.4280)
Luminance	0.0429 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3287 #87721D

analogous

#1D6787 #1D3287 #3D1D87

triadic

#1D3287 #871D32 #32871D

tetradic

#1D3287 #871D67 #87721D #1D873D

square

#1D3287 #871D67 #87721D #1D873D

split-complementary

#1D3287 #873D1D #67871D

monochromatic

#070D22 #121F55 #1D3287 #2845B9 #4764D7

Accessibility & contrast

On white

11.30

#1D3287 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1D3287 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3287

11.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3287	#FFFFFF	#000000	##FFFFFF
##1D3287	1.00	11.30	1.86	11.30
#FFFFFF	11.30	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00408A

Deuteranopia (green-blind)

#003685

Tritanopia (blue-blind)

#004857

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1d3287;
/* rgb */ color: rgb(29, 50, 135);
/* oklch */ color: oklch(35.9% 0.144 267.6);

Tailwind

colors: {
  custom: {
    50: '#6b69ab',
    500: '#1d3287',
    950: '#000000',
  },
}

SCSS

$custom: #1d3287;
$custom-light: #6b69ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3287",
  "rgb": {
    "r": 29,
    "g": 50,
    "b": 135
  },
  "hsl": {
    "h": 228.113,
    "s": 64.634,
    "l": 32.157
  },
  "oklch": {
    "l": 0.3594,
    "c": 0.14413,
    "h": 267.6
  },
  "luminance": 0.04292
}

Semantic roles & 50–950 ramp

primary

#1D3287

secondary

#B9A346

accent

#C640E8

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #1D3287

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

Preview Lab → · Contrast checker → · Palette generator →