#1D1583#1D1583

#1D1583 is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.8% C 0.170 H 273.1°. Best body text is #FFFFFF at 14.12:1 contrast (WCAG AA passes).

Color values

HEX	#1D1583
RGB	rgb(29, 21, 131)
HSL	hsl(244, 72%, 30%)
HSV	hsv(244, 84%, 51%)
CMYK	cmyk(77.9%, 84%, 0%, 48.6%)
CIE-LAB	lab(17.63, 40.78, -58.82)
CIE-LCH	lch(17.63, 71.57, 304.73°)
OKLab	oklab(30.79% 0.0093 -0.1701)
OKLCH	oklch(30.79% 0.17 273.1)
XYZ	xyz(4.8702, 2.4357, 21.6818)
Luminance	0.0244 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D1583 #7B8315

analogous

#154483 #1D1583 #541583

triadic

#1D1583 #831D15 #15831D

tetradic

#1D1583 #831544 #7B8315 #158354

square

#1D1583 #831544 #7B8315 #158354

split-complementary

#1D1583 #835415 #448315

monochromatic

#06041A #110D4E #1D1583 #291DB8 #4034DE

Accessibility & contrast

On white

14.12

#1D1583 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#1D1583 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D1583

14.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D1583	#FFFFFF	#000000	##FFFFFF
##1D1583	1.00	14.12	1.49	14.12
#FFFFFF	14.12	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003086

Deuteranopia (green-blind)

#002681

Tritanopia (blue-blind)

#00384D

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #1d1583;
/* rgb */ color: rgb(29, 21, 131);
/* oklch */ color: oklch(30.8% 0.170 273.1);

Tailwind

colors: {
  custom: {
    50: '#6d56a8',
    500: '#1d1583',
    950: '#000000',
  },
}

SCSS

$custom: #1d1583;
$custom-light: #6d56a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1d1583",
  "rgb": {
    "r": 29,
    "g": 21,
    "b": 131
  },
  "hsl": {
    "h": 244.364,
    "s": 72.368,
    "l": 29.804
  },
  "oklch": {
    "l": 0.30788,
    "c": 0.1704,
    "h": 273.1
  },
  "luminance": 0.02436
}

Semantic roles & 50–950 ramp

primary

#1D1583

secondary

#AFB83C

accent

#EF39E2

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #1D1583

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

Preview Lab → · Contrast checker → · Palette generator →