#1D3E83#1D3E83

#1D3E83 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.2% C 0.123 H 262.8°. Best body text is #FFFFFF at 10.15:1 contrast (WCAG AA passes).

Color values

HEX	#1D3E83
RGB	rgb(29, 62, 131)
HSL	hsl(221, 64%, 31%)
HSV	hsv(221, 78%, 51%)
CMYK	cmyk(77.9%, 52.7%, 0%, 48.6%)
CIE-LAB	lab(27.69, 14.28, -42.32)
CIE-LCH	lch(27.69, 44.66, 288.64°)
OKLab	oklab(38.16% -0.0154 -0.1217)
OKLCH	oklch(38.16% 0.123 262.8)
XYZ	xyz(6.3246, 5.3444, 22.1666)
Luminance	0.0534 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3E83 #83621D

analogous

#1D7183 #1D3E83 #2F1D83

triadic

#1D3E83 #831D3E #3E831D

tetradic

#1D3E83 #831D71 #83621D #1D832F

square

#1D3E83 #831D71 #83621D #1D832F

split-complementary

#1D3E83 #832F1D #71831D

monochromatic

#070F1F #122651 #1D3E83 #2856B5 #4574D6

Accessibility & contrast

On white

10.15

#1D3E83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#1D3E83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3E83

10.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3E83	#FFFFFF	#000000	##FFFFFF
##1D3E83	1.00	10.15	2.07	10.15
#FFFFFF	10.15	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#124685

Deuteranopia (green-blind)

#003D82

Tritanopia (blue-blind)

#004F5A

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1d3e83;
/* rgb */ color: rgb(29, 62, 131);
/* oklch */ color: oklch(38.2% 0.123 262.8);

Tailwind

colors: {
  custom: {
    50: '#6972a8',
    500: '#1d3e83',
    950: '#000000',
  },
}

SCSS

$custom: #1d3e83;
$custom-light: #6972a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3e83",
  "rgb": {
    "r": 29,
    "g": 62,
    "b": 131
  },
  "hsl": {
    "h": 220.588,
    "s": 63.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.38158,
    "c": 0.12273,
    "h": 262.8
  },
  "luminance": 0.05345
}

Semantic roles & 50–950 ramp

primary

#1D3E83

secondary

#B69246

accent

#B141E7

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1D3E83

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

Preview Lab → · Contrast checker → · Palette generator →