#1D255F#1D255F

#1D255F is a dark, moderate blue. Relative luminance 0.024; OKLCH L 29.6% C 0.103 H 272.5°. Best body text is #FFFFFF at 14.17:1 contrast (WCAG AA passes).

Color values

HEX	#1D255F
RGB	rgb(29, 37, 95)
HSL	hsl(233, 53%, 24%)
HSV	hsv(233, 69%, 37%)
CMYK	cmyk(69.5%, 61.1%, 0%, 62.7%)
CIE-LAB	lab(17.51, 17.57, -35.71)
CIE-LCH	lch(17.51, 39.80, 296.20°)
OKLab	oklab(29.57% 0.0045 -0.1027)
OKLCH	oklch(29.57% 0.103 272.5)
XYZ	xyz(3.2331, 2.4103, 11.1191)
Luminance	0.0241 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D255F #5F571D

analogous

#1D465F #1D255F #361D5F

triadic

#1D255F #5F1D25 #255F1D

tetradic

#1D255F #5F1D46 #5F571D #1D5F36

square

#1D255F #5F1D46 #5F571D #1D5F36

split-complementary

#1D255F #5F361D #465F1D

monochromatic

#070917 #0F1330 #1D255F #2B378E #3A4ABD

Accessibility & contrast

On white

14.17

#1D255F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.48

#1D255F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D255F

14.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D255F	#FFFFFF	#000000	##FFFFFF
##1D255F	1.00	14.17	1.48	14.17
#FFFFFF	14.17	1.00	21.00	1.00
#000000	1.48	21.00	1.00	21.00
##FFFFFF	14.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E61

Deuteranopia (green-blind)

#00285E

Tritanopia (blue-blind)

#00333E

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #1d255f;
/* rgb */ color: rgb(29, 37, 95);
/* oklch */ color: oklch(29.6% 0.103 272.5);

Tailwind

colors: {
  custom: {
    50: '#625f8d',
    500: '#1d255f',
    950: '#000000',
  },
}

SCSS

$custom: #1d255f;
$custom-light: #625f8d;
$custom-dark: #000000;

JSON

{
  "hex": "#1d255f",
  "rgb": {
    "r": 29,
    "g": 37,
    "b": 95
  },
  "hsl": {
    "h": 232.727,
    "s": 53.226,
    "l": 24.314
  },
  "oklch": {
    "l": 0.29571,
    "c": 0.10283,
    "h": 272.5
  },
  "luminance": 0.02411
}

Semantic roles & 50–950 ramp

primary

#1D255F

secondary

#948A44

accent

#CB4BDD

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#05040C

muted

#7A797D

Preview Lab

Preview with #1D255F

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

Preview Lab → · Contrast checker → · Palette generator →