#1D1783#1D1783

#1D1783 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 31.0% C 0.169 H 272.9°. Best body text is #FFFFFF at 13.98:1 contrast (WCAG AA passes).

Color values

HEX	#1D1783
RGB	rgb(29, 23, 131)
HSL	hsl(243, 70%, 30%)
HSV	hsv(243, 82%, 51%)
CMYK	cmyk(77.9%, 82.4%, 0%, 48.6%)
CIE-LAB	lab(17.97, 39.76, -58.24)
CIE-LCH	lch(17.97, 70.52, 304.32°)
OKLab	oklab(31.03% 0.0087 -0.1685)
OKLCH	oklch(31.03% 0.169 272.9)
XYZ	xyz(4.9085, 2.5122, 21.6945)
Luminance	0.0251 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D1783 #7D8317

analogous

#174783 #1D1783 #531783

triadic

#1D1783 #831D17 #17831D

tetradic

#1D1783 #831747 #7D8317 #178353

square

#1D1783 #831747 #7D8317 #178353

split-complementary

#1D1783 #835317 #478317

monochromatic

#06051B #110E4F #1D1783 #2920B7 #4138DC

Accessibility & contrast

On white

13.98

#1D1783 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#1D1783 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D1783

13.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D1783	#FFFFFF	#000000	##FFFFFF
##1D1783	1.00	13.98	1.50	13.98
#FFFFFF	13.98	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	13.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003186

Deuteranopia (green-blind)

#002781

Tritanopia (blue-blind)

#00394D

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1d1783;
/* rgb */ color: rgb(29, 23, 131);
/* oklch */ color: oklch(31.0% 0.169 272.9);

Tailwind

colors: {
  custom: {
    50: '#6d57a8',
    500: '#1d1783',
    950: '#000000',
  },
}

SCSS

$custom: #1d1783;
$custom-light: #6d57a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1d1783",
  "rgb": {
    "r": 29,
    "g": 23,
    "b": 131
  },
  "hsl": {
    "h": 243.333,
    "s": 70.13,
    "l": 30.196
  },
  "oklch": {
    "l": 0.31029,
    "c": 0.16873,
    "h": 272.9
  },
  "luminance": 0.02513
}

Semantic roles & 50–950 ramp

primary

#1D1783

secondary

#B1B73F

accent

#ED3BE3

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #1D1783

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

Preview Lab → · Contrast checker → · Palette generator →