#1D2181#1D2181

#1D2181 is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.2% C 0.156 H 271.7°. Best body text is #FFFFFF at 13.23:1 contrast (WCAG AA passes).

Color values

HEX	#1D2181
RGB	rgb(29, 33, 129)
HSL	hsl(238, 63%, 31%)
HSV	hsv(238, 78%, 51%)
CMYK	cmyk(77.5%, 74.4%, 0%, 49.4%)
CIE-LAB	lab(19.78, 33.29, -53.99)
CIE-LCH	lch(19.78, 63.43, 301.66°)
OKLab	oklab(32.23% 0.0048 -0.1563)
OKLCH	oklch(32.23% 0.156 271.7)
XYZ	xyz(5.0117, 2.9334, 21.0667)
Luminance	0.0293 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D2181 #817D1D

analogous

#1D5381 #1D2181 #4B1D81

triadic

#1D2181 #811D21 #21811D

tetradic

#1D2181 #811D53 #817D1D #1D814B

square

#1D2181 #811D53 #817D1D #1D814B

split-complementary

#1D2181 #814B1D #53811D

monochromatic

#07071D #12144F #1D2181 #282EB3 #4449D5

Accessibility & contrast

On white

13.23

#1D2181 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#1D2181 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D2181

13.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D2181	#FFFFFF	#000000	##FFFFFF
##1D2181	1.00	13.23	1.59	13.23
#FFFFFF	13.23	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003584

Deuteranopia (green-blind)

#002B7F

Tritanopia (blue-blind)

#003C4F

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1d2181;
/* rgb */ color: rgb(29, 33, 129);
/* oklch */ color: oklch(32.2% 0.156 271.7);

Tailwind

colors: {
  custom: {
    50: '#6b5da7',
    500: '#1d2181',
    950: '#000000',
  },
}

SCSS

$custom: #1d2181;
$custom-light: #6b5da7;
$custom-dark: #000000;

JSON

{
  "hex": "#1d2181",
  "rgb": {
    "r": 29,
    "g": 33,
    "b": 129
  },
  "hsl": {
    "h": 237.6,
    "s": 63.291,
    "l": 30.98
  },
  "oklch": {
    "l": 0.32234,
    "c": 0.15635,
    "h": 271.7
  },
  "luminance": 0.02934
}

Semantic roles & 50–950 ramp

primary

#1D2181

secondary

#B4B046

accent

#E041E6

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#080410

muted

#7A797F

Preview Lab

Preview with #1D2181

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

Preview Lab → · Contrast checker → · Palette generator →