#1D3281#1D3281

#1D3281 is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.4% C 0.136 H 267.5°. Best body text is #FFFFFF at 11.50:1 contrast (WCAG AA passes).

Color values

HEX	#1D3281
RGB	rgb(29, 50, 129)
HSL	hsl(227, 63%, 31%)
HSV	hsv(227, 78%, 51%)
CMYK	cmyk(77.5%, 61.2%, 0%, 49.4%)
CIE-LAB	lab(24.09, 21.87, -46.92)
CIE-LCH	lch(24.09, 51.77, 294.99°)
OKLab	oklab(35.39% -0.006 -0.1355)
OKLCH	oklch(35.39% 0.136 267.5)
XYZ	xyz(5.6084, 4.1268, 21.2656)
Luminance	0.0413 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3281 #816C1D

analogous

#1D6481 #1D3281 #3A1D81

triadic

#1D3281 #811D32 #32811D

tetradic

#1D3281 #811D64 #816C1D #1D813A

square

#1D3281 #811D64 #816C1D #1D813A

split-complementary

#1D3281 #813A1D #64811D

monochromatic

#070B1D #121F4F #1D3281 #2845B3 #4462D5

Accessibility & contrast

On white

11.50

#1D3281 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#1D3281 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3281

11.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3281	#FFFFFF	#000000	##FFFFFF
##1D3281	1.00	11.50	1.83	11.50
#FFFFFF	11.50	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E84

Deuteranopia (green-blind)

#00357F

Tritanopia (blue-blind)

#004654

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1d3281;
/* rgb */ color: rgb(29, 50, 129);
/* oklch */ color: oklch(35.4% 0.136 267.5);

Tailwind

colors: {
  custom: {
    50: '#6969a6',
    500: '#1d3281',
    950: '#000000',
  },
}

SCSS

$custom: #1d3281;
$custom-light: #6969a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3281",
  "rgb": {
    "r": 29,
    "g": 50,
    "b": 129
  },
  "hsl": {
    "h": 227.4,
    "s": 63.291,
    "l": 30.98
  },
  "oklch": {
    "l": 0.35387,
    "c": 0.13563,
    "h": 267.5
  },
  "luminance": 0.04127
}

Semantic roles & 50–950 ramp

primary

#1D3281

secondary

#B49D46

accent

#C441E6

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1D3281

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

Preview Lab → · Contrast checker → · Palette generator →