#1D1B7E#1D1B7E

#1D1B7E is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.0% C 0.159 H 273.0°. Best body text is #FFFFFF at 13.91:1 contrast (WCAG AA passes).

Color values

HEX	#1D1B7E
RGB	rgb(29, 27, 126)
HSL	hsl(241, 65%, 30%)
HSV	hsv(241, 79%, 49%)
CMYK	cmyk(77%, 78.6%, 0%, 50.6%)
CIE-LAB	lab(18.15, 35.86, -54.78)
CIE-LCH	lch(18.15, 65.47, 303.21°)
OKLab	oklab(30.98% 0.0082 -0.1585)
OKLCH	oklch(30.98% 0.159 273)
XYZ	xyz(4.6633, 2.5510, 19.9812)
Luminance	0.0255 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D1B7E #7C7E1B

analogous

#1B4B7E #1D1B7E #4E1B7E

triadic

#1D1B7E #7E1D1B #1B7E1D

tetradic

#1D1B7E #7E1B4B #7C7E1B #1B7E4E

square

#1D1B7E #7E1B4B #7C7E1B #1B7E4E

split-complementary

#1D1B7E #7E4E1B #4B7E1B

monochromatic

#060519 #11104C #1D1B7E #2926B0 #413ED6

Accessibility & contrast

On white

13.91

#1D1B7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#1D1B7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D1B7E

13.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D1B7E	#FFFFFF	#000000	##FFFFFF
##1D1B7E	1.00	13.91	1.51	13.91
#FFFFFF	13.91	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003181

Deuteranopia (green-blind)

#00277C

Tritanopia (blue-blind)

#00384B

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1d1b7e;
/* rgb */ color: rgb(29, 27, 126);
/* oklch */ color: oklch(31.0% 0.159 273.0);

Tailwind

colors: {
  custom: {
    50: '#6b59a5',
    500: '#1d1b7e',
    950: '#000000',
  },
}

SCSS

$custom: #1d1b7e;
$custom-light: #6b59a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1d1b7e",
  "rgb": {
    "r": 29,
    "g": 27,
    "b": 126
  },
  "hsl": {
    "h": 241.212,
    "s": 64.706,
    "l": 30
  },
  "oklch": {
    "l": 0.30978,
    "c": 0.15873,
    "h": 273
  },
  "luminance": 0.02551
}

Semantic roles & 50–950 ramp

primary

#1D1B7E

secondary

#B0B243

accent

#E840E4

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1D1B7E

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

Preview Lab → · Contrast checker → · Palette generator →