#1D1579#1D1579

#1D1579 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.6% C 0.158 H 274.4°. Best body text is #FFFFFF at 14.63:1 contrast (WCAG AA passes).

Color values

HEX	#1D1579
RGB	rgb(29, 21, 121)
HSL	hsl(245, 70%, 28%)
HSV	hsv(245, 83%, 47%)
CMYK	cmyk(76%, 82.6%, 0%, 52.5%)
CIE-LAB	lab(16.39, 37.49, -54.49)
CIE-LCH	lch(16.39, 66.14, 304.53°)
OKLab	oklab(29.57% 0.012 -0.1576)
OKLCH	oklch(29.57% 0.158 274.4)
XYZ	xyz(4.2249, 2.1776, 18.2831)
Luminance	0.0218 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D1579 #717915

analogous

#153F79 #1D1579 #4F1579

triadic

#1D1579 #791D15 #15791D

tetradic

#1D1579 #79153F #717915 #15794F

square

#1D1579 #79153F #717915 #15794F

split-complementary

#1D1579 #794F15 #3F7915

monochromatic

#06051A #110C45 #1D1579 #291EAD #3C2EDB

Accessibility & contrast

On white

14.63

#1D1579 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#1D1579 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D1579

14.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D1579	#FFFFFF	#000000	##FFFFFF
##1D1579	1.00	14.63	1.44	14.63
#FFFFFF	14.63	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D7C

Deuteranopia (green-blind)

#002477

Tritanopia (blue-blind)

#003447

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1d1579;
/* rgb */ color: rgb(29, 21, 121);
/* oklch */ color: oklch(29.6% 0.158 274.4);

Tailwind

colors: {
  custom: {
    50: '#6a55a1',
    500: '#1d1579',
    950: '#000000',
  },
}

SCSS

$custom: #1d1579;
$custom-light: #6a55a1;
$custom-dark: #000000;

JSON

{
  "hex": "#1d1579",
  "rgb": {
    "r": 29,
    "g": 21,
    "b": 121
  },
  "hsl": {
    "h": 244.8,
    "s": 70.423,
    "l": 27.843
  },
  "oklch": {
    "l": 0.29574,
    "c": 0.15805,
    "h": 274.4
  },
  "luminance": 0.02178
}

Semantic roles & 50–950 ramp

primary

#1D1579

secondary

#A5AF3B

accent

#ED3BDF

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1D1579

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

Preview Lab → · Contrast checker → · Palette generator →