#1D318A#1D318A

#1D318A is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.0% C 0.150 H 268.0°. Best body text is #FFFFFF at 11.30:1 contrast (WCAG AA passes).

Color values

HEX	#1D318A
RGB	rgb(29, 49, 138)
HSL	hsl(229, 65%, 33%)
HSV	hsv(229, 79%, 54%)
CMYK	cmyk(79%, 64.5%, 0%, 45.9%)
CIE-LAB	lab(24.61, 26.11, -51.69)
CIE-LCH	lch(24.61, 57.91, 296.80°)
OKLab	oklab(36.03% -0.0053 -0.1495)
OKLCH	oklch(36.03% 0.15 268)
XYZ	xyz(6.1909, 4.2921, 24.5420)
Luminance	0.0429 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D318A #8A761D

analogous

#1D678A #1D318A #401D8A

triadic

#1D318A #8A1D31 #318A1D

tetradic

#1D318A #8A1D67 #8A761D #1D8A40

square

#1D318A #8A1D67 #8A761D #1D8A40

split-complementary

#1D318A #8A401D #678A1D

monochromatic

#080D25 #121F57 #1D318A #2843BD #4963D9

Accessibility & contrast

On white

11.30

#1D318A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1D318A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D318A

11.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D318A	#FFFFFF	#000000	##FFFFFF
##1D318A	1.00	11.30	1.86	11.30
#FFFFFF	11.30	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00408D

Deuteranopia (green-blind)

#003588

Tritanopia (blue-blind)

#004858

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1d318a;
/* rgb */ color: rgb(29, 49, 138);
/* oklch */ color: oklch(36.0% 0.150 268.0);

Tailwind

colors: {
  custom: {
    50: '#6c69ad',
    500: '#1d318a',
    950: '#000000',
  },
}

SCSS

$custom: #1d318a;
$custom-light: #6c69ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1d318a",
  "rgb": {
    "r": 29,
    "g": 49,
    "b": 138
  },
  "hsl": {
    "h": 228.991,
    "s": 65.269,
    "l": 32.745
  },
  "oklch": {
    "l": 0.36026,
    "c": 0.14958,
    "h": 268
  },
  "luminance": 0.04293
}

Semantic roles & 50–950 ramp

primary

#1D318A

secondary

#BBA648

accent

#C940E8

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1D318A

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

Preview Lab → · Contrast checker → · Palette generator →