#1D1F73#1D1F73

#1D1F73 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.4% C 0.140 H 273.3°. Best body text is #FFFFFF at 14.04:1 contrast (WCAG AA passes).

Color values

HEX	#1D1F73
RGB	rgb(29, 31, 115)
HSL	hsl(239, 60%, 28%)
HSV	hsv(239, 75%, 45%)
CMYK	cmyk(74.8%, 73%, 0%, 54.9%)
CIE-LAB	lab(17.82, 29.43, -48.27)
CIE-LCH	lch(17.82, 56.54, 301.37°)
OKLab	oklab(30.38% 0.0081 -0.1396)
OKLCH	oklch(30.38% 0.14 273.3)
XYZ	xyz(4.0902, 2.4786, 16.4792)
Luminance	0.0248 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D1F73 #73711D

analogous

#1D4A73 #1D1F73 #461D73

triadic

#1D1F73 #731D1F #1F731D

tetradic

#1D1F73 #731D4A #73711D #1D7346

square

#1D1F73 #731D4A #73711D #1D7346

split-complementary

#1D1F73 #73461D #4A731D

monochromatic

#060718 #111242 #1D1F73 #292CA4 #3C40CE

Accessibility & contrast

On white

14.04

#1D1F73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#1D1F73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D1F73

14.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D1F73	#FFFFFF	#000000	##FFFFFF
##1D1F73	1.00	14.04	1.50	14.04
#FFFFFF	14.04	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	14.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003076

Deuteranopia (green-blind)

#002871

Tritanopia (blue-blind)

#003646

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1d1f73;
/* rgb */ color: rgb(29, 31, 115);
/* oklch */ color: oklch(30.4% 0.140 273.3);

Tailwind

colors: {
  custom: {
    50: '#675b9c',
    500: '#1d1f73',
    950: '#000000',
  },
}

SCSS

$custom: #1d1f73;
$custom-light: #675b9c;
$custom-dark: #000000;

JSON

{
  "hex": "#1d1f73",
  "rgb": {
    "r": 29,
    "g": 31,
    "b": 115
  },
  "hsl": {
    "h": 238.605,
    "s": 59.722,
    "l": 28.235
  },
  "oklch": {
    "l": 0.30384,
    "c": 0.13981,
    "h": 273.3
  },
  "luminance": 0.02479
}

Semantic roles & 50–950 ramp

primary

#1D1F73

secondary

#A7A545

accent

#DF45E3

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #1D1F73

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

Preview Lab → · Contrast checker → · Palette generator →