#1D3989#1D3989

#1D3989 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.6% C 0.138 H 265.5°. Best body text is #FFFFFF at 10.51:1 contrast (WCAG AA passes).

Color values

HEX	#1D3989
RGB	rgb(29, 57, 137)
HSL	hsl(224, 65%, 33%)
HSV	hsv(224, 79%, 54%)
CMYK	cmyk(78.8%, 58.4%, 0%, 46.3%)
CIE-LAB	lab(26.71, 20.18, -47.64)
CIE-LCH	lch(26.71, 51.74, 292.96°)
OKLab	oklab(37.56% -0.0109 -0.1375)
OKLCH	oklch(37.56% 0.138 265.5)
XYZ	xyz(6.4836, 4.9929, 24.2841)
Luminance	0.0499 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3989 #896D1D

analogous

#1D6F89 #1D3989 #371D89

triadic

#1D3989 #891D39 #39891D

tetradic

#1D3989 #891D6F #896D1D #1D8937

square

#1D3989 #891D6F #896D1D #1D8937

split-complementary

#1D3989 #89371D #6F891D

monochromatic

#080F24 #122456 #1D3989 #284EBC #486DD8

Accessibility & contrast

On white

10.51

#1D3989 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#1D3989 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3989

10.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3989	#FFFFFF	#000000	##FFFFFF
##1D3989	1.00	10.51	2.00	10.51
#FFFFFF	10.51	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00448C

Deuteranopia (green-blind)

#003A87

Tritanopia (blue-blind)

#004D5B

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1d3989;
/* rgb */ color: rgb(29, 57, 137);
/* oklch */ color: oklch(37.6% 0.138 265.5);

Tailwind

colors: {
  custom: {
    50: '#6b6eac',
    500: '#1d3989',
    950: '#000000',
  },
}

SCSS

$custom: #1d3989;
$custom-light: #6b6eac;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3989",
  "rgb": {
    "r": 29,
    "g": 57,
    "b": 137
  },
  "hsl": {
    "h": 224.444,
    "s": 65.06,
    "l": 32.549
  },
  "oklch": {
    "l": 0.37564,
    "c": 0.13793,
    "h": 265.5
  },
  "luminance": 0.04994
}

Semantic roles & 50–950 ramp

primary

#1D3989

secondary

#BA9D47

accent

#BC40E8

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #1D3989

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

Preview Lab → · Contrast checker → · Palette generator →