#1D3483#1D3483

#1D3483 is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.0% C 0.136 H 266.9°. Best body text is #FFFFFF at 11.22:1 contrast (WCAG AA passes).

Color values

HEX	#1D3483
RGB	rgb(29, 52, 131)
HSL	hsl(226, 64%, 31%)
HSV	hsv(226, 78%, 51%)
CMYK	cmyk(77.9%, 60.3%, 0%, 48.6%)
CIE-LAB	lab(24.81, 21.27, -47.00)
CIE-LCH	lch(24.81, 51.59, 294.35°)
OKLab	oklab(35.98% -0.0074 -0.1357)
OKLCH	oklch(35.98% 0.136 266.9)
XYZ	xyz(5.8300, 4.3552, 22.0017)
Luminance	0.0436 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3483 #836C1D

analogous

#1D6783 #1D3483 #391D83

triadic

#1D3483 #831D34 #34831D

tetradic

#1D3483 #831D67 #836C1D #1D8339

square

#1D3483 #831D67 #836C1D #1D8339

split-complementary

#1D3483 #83391D #67831D

monochromatic

#070C1F #122051 #1D3483 #2848B5 #4565D6

Accessibility & contrast

On white

11.22

#1D3483 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#1D3483 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3483

11.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3483	#FFFFFF	#000000	##FFFFFF
##1D3483	1.00	11.22	1.87	11.22
#FFFFFF	11.22	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004086

Deuteranopia (green-blind)

#003681

Tritanopia (blue-blind)

#004856

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1d3483;
/* rgb */ color: rgb(29, 52, 131);
/* oklch */ color: oklch(36.0% 0.136 266.9);

Tailwind

colors: {
  custom: {
    50: '#6a6ba8',
    500: '#1d3483',
    950: '#000000',
  },
}

SCSS

$custom: #1d3483;
$custom-light: #6a6ba8;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3483",
  "rgb": {
    "r": 29,
    "g": 52,
    "b": 131
  },
  "hsl": {
    "h": 226.471,
    "s": 63.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.35982,
    "c": 0.13588,
    "h": 266.9
  },
  "luminance": 0.04356
}

Semantic roles & 50–950 ramp

primary

#1D3483

secondary

#B69D46

accent

#C141E7

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070610

muted

#7A7A7F

Preview Lab

Preview with #1D3483

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

Preview Lab → · Contrast checker → · Palette generator →