#1D318B#1D318B

#1D318B is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.1% C 0.151 H 268.0°. Best body text is #FFFFFF at 11.26:1 contrast (WCAG AA passes).

Color values

HEX	#1D318B
RGB	rgb(29, 49, 139)
HSL	hsl(229, 65%, 33%)
HSV	hsv(229, 79%, 55%)
CMYK	cmyk(79.1%, 64.7%, 0%, 45.5%)
CIE-LAB	lab(24.71, 26.50, -52.16)
CIE-LCH	lch(24.71, 58.51, 296.93°)
OKLab	oklab(36.12% -0.0053 -0.1509)
OKLCH	oklch(36.12% 0.151 268)
XYZ	xyz(6.2636, 4.3212, 24.9251)
Luminance	0.0432 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D318B #8B771D

analogous

#1D688B #1D318B #401D8B

triadic

#1D318B #8B1D31 #318B1D

tetradic

#1D318B #8B1D68 #8B771D #1D8B40

square

#1D318B #8B1D68 #8B771D #1D8B40

split-complementary

#1D318B #8B401D #688B1D

monochromatic

#080D26 #121F58 #1D318B #2843BE #4963D9

Accessibility & contrast

On white

11.26

#1D318B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1D318B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D318B

11.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D318B	#FFFFFF	#000000	##FFFFFF
##1D318B	1.00	11.26	1.86	11.26
#FFFFFF	11.26	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00408E

Deuteranopia (green-blind)

#003689

Tritanopia (blue-blind)

#004959

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1d318b;
/* rgb */ color: rgb(29, 49, 139);
/* oklch */ color: oklch(36.1% 0.151 268.0);

Tailwind

colors: {
  custom: {
    50: '#6c69ae',
    500: '#1d318b',
    950: '#000000',
  },
}

SCSS

$custom: #1d318b;
$custom-light: #6c69ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1d318b",
  "rgb": {
    "r": 29,
    "g": 49,
    "b": 139
  },
  "hsl": {
    "h": 229.091,
    "s": 65.476,
    "l": 32.941
  },
  "oklch": {
    "l": 0.36122,
    "c": 0.15096,
    "h": 268
  },
  "luminance": 0.04322
}

Semantic roles & 50–950 ramp

primary

#1D318B

secondary

#BBA649

accent

#CA3FE8

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1D318B

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

Preview Lab → · Contrast checker → · Palette generator →