#1D3D82#1D3D82

#1D3D82 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 37.9% C 0.123 H 263.1°. Best body text is #FFFFFF at 10.28:1 contrast (WCAG AA passes).

Color values

HEX	#1D3D82
RGB	rgb(29, 61, 130)
HSL	hsl(221, 64%, 31%)
HSV	hsv(221, 78%, 51%)
CMYK	cmyk(77.7%, 53.1%, 0%, 49%)
CIE-LAB	lab(27.32, 14.57, -42.29)
CIE-LCH	lch(27.32, 44.73, 289.01°)
OKLab	oklab(37.85% -0.0147 -0.1217)
OKLCH	oklch(37.85% 0.123 263.1)
XYZ	xyz(6.2033, 5.2097, 21.7934)
Luminance	0.0521 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3D82 #82621D

analogous

#1D6F82 #1D3D82 #2F1D82

triadic

#1D3D82 #821D3D #3D821D

tetradic

#1D3D82 #821D6F #82621D #1D822F

square

#1D3D82 #821D6F #82621D #1D822F

split-complementary

#1D3D82 #822F1D #6F821D

monochromatic

#070E1E #122650 #1D3D82 #2854B4 #4472D5

Accessibility & contrast

On white

10.28

#1D3D82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#1D3D82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3D82

10.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3D82	#FFFFFF	#000000	##FFFFFF
##1D3D82	1.00	10.28	2.04	10.28
#FFFFFF	10.28	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#104584

Deuteranopia (green-blind)

#003C81

Tritanopia (blue-blind)

#004E59

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1d3d82;
/* rgb */ color: rgb(29, 61, 130);
/* oklch */ color: oklch(37.9% 0.123 263.1);

Tailwind

colors: {
  custom: {
    50: '#6972a7',
    500: '#1d3d82',
    950: '#000000',
  },
}

SCSS

$custom: #1d3d82;
$custom-light: #6972a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3d82",
  "rgb": {
    "r": 29,
    "g": 61,
    "b": 130
  },
  "hsl": {
    "h": 220.99,
    "s": 63.522,
    "l": 31.176
  },
  "oklch": {
    "l": 0.37852,
    "c": 0.12258,
    "h": 263.1
  },
  "luminance": 0.0521
}

Semantic roles & 50–950 ramp

primary

#1D3D82

secondary

#B59246

accent

#B241E7

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1D3D82

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

Preview Lab → · Contrast checker → · Palette generator →