#1D228A#1D228A

#1D228A is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.4% C 0.167 H 271.0°. Best body text is #FFFFFF at 12.74:1 contrast (WCAG AA passes).

Color values

HEX	#1D228A
RGB	rgb(29, 34, 138)
HSL	hsl(237, 65%, 33%)
HSV	hsv(237, 79%, 54%)
CMYK	cmyk(79%, 75.4%, 0%, 45.9%)
CIE-LAB	lab(20.98, 35.91, -57.67)
CIE-LCH	lch(20.98, 67.94, 301.91°)
OKLab	oklab(33.39% 0.0029 -0.167)
OKLCH	oklch(33.39% 0.167 271)
XYZ	xyz(5.6646, 3.2396, 24.3666)
Luminance	0.0324 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D228A #8A851D

analogous

#1D588A #1D228A #4F1D8A

triadic

#1D228A #8A1D22 #228A1D

tetradic

#1D228A #8A1D58 #8A851D #1D8A4F

square

#1D228A #8A1D58 #8A851D #1D8A4F

split-complementary

#1D228A #8A4F1D #588A1D

monochromatic

#080925 #121657 #1D228A #282EBD #494FD9

Accessibility & contrast

On white

12.74

#1D228A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#1D228A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D228A

12.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D228A	#FFFFFF	#000000	##FFFFFF
##1D228A	1.00	12.74	1.65	12.74
#FFFFFF	12.74	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00388D

Deuteranopia (green-blind)

#002D88

Tritanopia (blue-blind)

#004054

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1d228a;
/* rgb */ color: rgb(29, 34, 138);
/* oklch */ color: oklch(33.4% 0.167 271.0);

Tailwind

colors: {
  custom: {
    50: '#6d5ead',
    500: '#1d228a',
    950: '#000000',
  },
}

SCSS

$custom: #1d228a;
$custom-light: #6d5ead;
$custom-dark: #000000;

JSON

{
  "hex": "#1d228a",
  "rgb": {
    "r": 29,
    "g": 34,
    "b": 138
  },
  "hsl": {
    "h": 237.248,
    "s": 65.269,
    "l": 32.745
  },
  "oklch": {
    "l": 0.33386,
    "c": 0.167,
    "h": 271
  },
  "luminance": 0.0324
}

Semantic roles & 50–950 ramp

primary

#1D228A

secondary

#BBB648

accent

#E040E8

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1D228A

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

Preview Lab → · Contrast checker → · Palette generator →