#1D1581#1D1581

#1D1581 is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.5% C 0.168 H 273.4°. Best body text is #FFFFFF at 14.22:1 contrast (WCAG AA passes).

Color values

HEX	#1D1581
RGB	rgb(29, 21, 129)
HSL	hsl(244, 72%, 29%)
HSV	hsv(244, 84%, 51%)
CMYK	cmyk(77.5%, 83.7%, 0%, 49.4%)
CIE-LAB	lab(17.38, 40.13, -57.96)
CIE-LCH	lch(17.38, 70.50, 304.69°)
OKLab	oklab(30.54% 0.0099 -0.1677)
OKLCH	oklch(30.54% 0.168 273.4)
XYZ	xyz(4.7360, 2.3820, 20.9748)
Luminance	0.0238 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D1581 #798115

analogous

#154381 #1D1581 #531581

triadic

#1D1581 #811D15 #15811D

tetradic

#1D1581 #811543 #798115 #158153

square

#1D1581 #811543 #798115 #158153

split-complementary

#1D1581 #815315 #438115

monochromatic

#06041A #110C4C #1D1581 #291EB6 #3F33DE

Accessibility & contrast

On white

14.22

#1D1581 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.48

#1D1581 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D1581

14.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D1581	#FFFFFF	#000000	##FFFFFF
##1D1581	1.00	14.22	1.48	14.22
#FFFFFF	14.22	1.00	21.00	1.00
#000000	1.48	21.00	1.00	21.00
##FFFFFF	14.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003084

Deuteranopia (green-blind)

#00257F

Tritanopia (blue-blind)

#00374C

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #1d1581;
/* rgb */ color: rgb(29, 21, 129);
/* oklch */ color: oklch(30.5% 0.168 273.4);

Tailwind

colors: {
  custom: {
    50: '#6c56a7',
    500: '#1d1581',
    950: '#000000',
  },
}

SCSS

$custom: #1d1581;
$custom-light: #6c56a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1d1581",
  "rgb": {
    "r": 29,
    "g": 21,
    "b": 129
  },
  "hsl": {
    "h": 244.444,
    "s": 72,
    "l": 29.412
  },
  "oklch": {
    "l": 0.30543,
    "c": 0.16796,
    "h": 273.4
  },
  "luminance": 0.02383
}

Semantic roles & 50–950 ramp

primary

#1D1581

secondary

#ADB63C

accent

#EF39E1

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #1D1581

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

Preview Lab → · Contrast checker → · Palette generator →