#1D255B#1D255B

#1D255B is a dark, moderate blue. Relative luminance 0.023; OKLCH L 29.2% C 0.097 H 272.6°. Best body text is #FFFFFF at 14.31:1 contrast (WCAG AA passes).

Color values

HEX	#1D255B
RGB	rgb(29, 37, 91)
HSL	hsl(232, 52%, 24%)
HSV	hsv(232, 68%, 36%)
CMYK	cmyk(68.1%, 59.3%, 0%, 64.3%)
CIE-LAB	lab(17.18, 15.99, -33.59)
CIE-LCH	lch(17.18, 37.20, 295.46°)
OKLab	oklab(29.22% 0.0044 -0.0965)
OKLCH	oklch(29.22% 0.097 272.6)
XYZ	xyz(3.0560, 2.3394, 10.1860)
Luminance	0.0234 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D255B #5B531D

analogous

#1D445B #1D255B #341D5B

triadic

#1D255B #5B1D25 #255B1D

tetradic

#1D255B #5B1D44 #5B531D #1D5B34

square

#1D255B #5B1D44 #5B531D #1D5B34

split-complementary

#1D255B #5B341D #445B1D

monochromatic

#070917 #0E122D #1D255B #2C3889 #3B4BB8

Accessibility & contrast

On white

14.31

#1D255B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#1D255B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D255B

14.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D255B	#FFFFFF	#000000	##FFFFFF
##1D255B	1.00	14.31	1.47	14.31
#FFFFFF	14.31	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D5D

Deuteranopia (green-blind)

#00285A

Tritanopia (blue-blind)

#00323C

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #1d255b;
/* rgb */ color: rgb(29, 37, 91);
/* oklch */ color: oklch(29.2% 0.097 272.6);

Tailwind

colors: {
  custom: {
    50: '#615f8a',
    500: '#1d255b',
    950: '#000000',
  },
}

SCSS

$custom: #1d255b;
$custom-light: #615f8a;
$custom-dark: #000000;

JSON

{
  "hex": "#1d255b",
  "rgb": {
    "r": 29,
    "g": 37,
    "b": 91
  },
  "hsl": {
    "h": 232.258,
    "s": 51.667,
    "l": 23.529
  },
  "oklch": {
    "l": 0.29218,
    "c": 0.09659,
    "h": 272.6
  },
  "luminance": 0.0234
}

Semantic roles & 50–950 ramp

primary

#1D255B

secondary

#908644

accent

#C94DDB

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#05040C

muted

#7A797D

Preview Lab

Preview with #1D255B

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

Preview Lab → · Contrast checker → · Palette generator →