#1D1B88#1D1B88

#1D1B88 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.1% C 0.171 H 272.0°. Best body text is #FFFFFF at 13.42:1 contrast (WCAG AA passes).

Color values

HEX	#1D1B88
RGB	rgb(29, 27, 136)
HSL	hsl(241, 67%, 32%)
HSV	hsv(241, 80%, 53%)
CMYK	cmyk(78.7%, 80.1%, 0%, 46.7%)
CIE-LAB	lab(19.32, 39.29, -59.16)
CIE-LCH	lch(19.32, 71.02, 303.59°)
OKLab	oklab(32.14% 0.0061 -0.1713)
OKLCH	oklch(32.14% 0.171 272)
XYZ	xyz(5.3411, 2.8221, 23.5510)
Luminance	0.0282 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D1B88 #86881B

analogous

#1B5088 #1D1B88 #541B88

triadic

#1D1B88 #881D1B #1B881D

tetradic

#1D1B88 #881B50 #86881B #1B8854

square

#1D1B88 #881B50 #86881B #1B8854

split-complementary

#1D1B88 #88541B #50881B

monochromatic

#070722 #121155 #1D1B88 #2825BB #4644DA

Accessibility & contrast

On white

13.42

#1D1B88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1D1B88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D1B88

13.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D1B88	#FFFFFF	#000000	##FFFFFF
##1D1B88	1.00	13.42	1.56	13.42
#FFFFFF	13.42	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00348B

Deuteranopia (green-blind)

#002986

Tritanopia (blue-blind)

#003C51

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1d1b88;
/* rgb */ color: rgb(29, 27, 136);
/* oklch */ color: oklch(32.1% 0.171 272.0);

Tailwind

colors: {
  custom: {
    50: '#6d5aac',
    500: '#1d1b88',
    950: '#000000',
  },
}

SCSS

$custom: #1d1b88;
$custom-light: #6d5aac;
$custom-dark: #000000;

JSON

{
  "hex": "#1d1b88",
  "rgb": {
    "r": 29,
    "g": 27,
    "b": 136
  },
  "hsl": {
    "h": 241.101,
    "s": 66.871,
    "l": 31.961
  },
  "oklch": {
    "l": 0.32143,
    "c": 0.17136,
    "h": 272
  },
  "luminance": 0.02823
}

Semantic roles & 50–950 ramp

primary

#1D1B88

secondary

#B9BB44

accent

#EA3EE7

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1D1B88

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

Preview Lab → · Contrast checker → · Palette generator →