#1D256D#1D256D

#1D256D is a dark, vivid blue. Relative luminance 0.027; OKLCH L 30.9% C 0.124 H 272.0°. Best body text is #FFFFFF at 13.66:1 contrast (WCAG AA passes).

Color values

HEX	#1D256D
RGB	rgb(29, 37, 109)
HSL	hsl(234, 58%, 27%)
HSV	hsv(234, 73%, 43%)
CMYK	cmyk(73.4%, 66.1%, 0%, 57.3%)
CIE-LAB	lab(18.75, 23.08, -42.87)
CIE-LCH	lch(18.75, 48.69, 298.30°)
OKLab	oklab(30.88% 0.0043 -0.1237)
OKLCH	oklch(30.88% 0.124 272)
XYZ	xyz(3.9276, 2.6881, 14.7769)
Luminance	0.0269 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D256D #6D651D

analogous

#1D4D6D #1D256D #3D1D6D

triadic

#1D256D #6D1D25 #256D1D

tetradic

#1D256D #6D1D4D #6D651D #1D6D3D

square

#1D256D #6D1D4D #6D651D #1D6D3D

split-complementary

#1D256D #6D3D1D #4D6D1D

monochromatic

#060818 #10153D #1D256D #2A359D #3A48CB

Accessibility & contrast

On white

13.66

#1D256D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#1D256D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D256D

13.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D256D	#FFFFFF	#000000	##FFFFFF
##1D256D	1.00	13.66	1.54	13.66
#FFFFFF	13.66	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00316F

Deuteranopia (green-blind)

#002A6C

Tritanopia (blue-blind)

#003745

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1d256d;
/* rgb */ color: rgb(29, 37, 109);
/* oklch */ color: oklch(30.9% 0.124 272.0);

Tailwind

colors: {
  custom: {
    50: '#655f98',
    500: '#1d256d',
    950: '#000000',
  },
}

SCSS

$custom: #1d256d;
$custom-light: #655f98;
$custom-dark: #000000;

JSON

{
  "hex": "#1d256d",
  "rgb": {
    "r": 29,
    "g": 37,
    "b": 109
  },
  "hsl": {
    "h": 234,
    "s": 57.971,
    "l": 27.059
  },
  "oklch": {
    "l": 0.30878,
    "c": 0.12383,
    "h": 272
  },
  "luminance": 0.02688
}

Semantic roles & 50–950 ramp

primary

#1D256D

secondary

#A29844

accent

#D247E1

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040E

muted

#7A797E

Preview Lab

Preview with #1D256D

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

Preview Lab → · Contrast checker → · Palette generator →