#1D227B#1D227B

#1D227B is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.8% C 0.147 H 272.0°. Best body text is #FFFFFF at 13.40:1 contrast (WCAG AA passes).

Color values

HEX	#1D227B
RGB	rgb(29, 34, 123)
HSL	hsl(237, 62%, 30%)
HSV	hsv(237, 76%, 48%)
CMYK	cmyk(76.4%, 72.4%, 0%, 51.8%)
CIE-LAB	lab(19.37, 30.45, -50.85)
CIE-LCH	lch(19.37, 59.27, 300.91°)
OKLab	oklab(31.75% 0.0051 -0.1471)
OKLCH	oklch(31.75% 0.147 272)
XYZ	xyz(4.6527, 2.8348, 19.0370)
Luminance	0.0284 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D227B #7B761D

analogous

#1D517B #1D227B #471D7B

triadic

#1D227B #7B1D22 #227B1D

tetradic

#1D227B #7B1D51 #7B761D #1D7B47

square

#1D227B #7B1D51 #7B761D #1D7B47

split-complementary

#1D227B #7B471D #517B1D

monochromatic

#060719 #111449 #1D227B #2930AD #4048D2

Accessibility & contrast

On white

13.40

#1D227B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#1D227B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D227B

13.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D227B	#FFFFFF	#000000	##FFFFFF
##1D227B	1.00	13.40	1.57	13.40
#FFFFFF	13.40	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00337E

Deuteranopia (green-blind)

#002A79

Tritanopia (blue-blind)

#003B4B

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1d227b;
/* rgb */ color: rgb(29, 34, 123);
/* oklch */ color: oklch(31.8% 0.147 272.0);

Tailwind

colors: {
  custom: {
    50: '#695da2',
    500: '#1d227b',
    950: '#000000',
  },
}

SCSS

$custom: #1d227b;
$custom-light: #695da2;
$custom-dark: #000000;

JSON

{
  "hex": "#1d227b",
  "rgb": {
    "r": 29,
    "g": 34,
    "b": 123
  },
  "hsl": {
    "h": 236.809,
    "s": 61.842,
    "l": 29.804
  },
  "oklch": {
    "l": 0.31751,
    "c": 0.14721,
    "h": 272
  },
  "luminance": 0.02835
}

Semantic roles & 50–950 ramp

primary

#1D227B

secondary

#AFA945

accent

#DC43E5

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1D227B

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

Preview Lab → · Contrast checker → · Palette generator →