#1D3772#1D3772

#1D3772 is a dark, moderate blue. Relative luminance 0.042; OKLCH L 35.2% C 0.107 H 263.9°. Best body text is #FFFFFF at 11.40:1 contrast (WCAG AA passes).

Color values

HEX	#1D3772
RGB	rgb(29, 55, 114)
HSL	hsl(222, 59%, 28%)
HSV	hsv(222, 75%, 45%)
CMYK	cmyk(74.6%, 51.8%, 0%, 55.3%)
CIE-LAB	lab(24.35, 12.29, -37.00)
CIE-LCH	lch(24.35, 38.99, 288.38°)
OKLab	oklab(35.21% -0.0114 -0.1062)
OKLCH	oklch(35.21% 0.107 263.9)
XYZ	xyz(4.9091, 4.2080, 16.4698)
Luminance	0.0421 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3772 #72581D

analogous

#1D6172 #1D3772 #2D1D72

triadic

#1D3772 #721D37 #37721D

tetradic

#1D3772 #721D61 #72581D #1D722D

square

#1D3772 #721D61 #72581D #1D722D

split-complementary

#1D3772 #722D1D #61721D

monochromatic

#060C18 #111F41 #1D3772 #294FA3 #3C68CD

Accessibility & contrast

On white

11.40

#1D3772 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#1D3772 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3772

11.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3772	#FFFFFF	#000000	##FFFFFF
##1D3772	1.00	11.40	1.84	11.40
#FFFFFF	11.40	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#153E74

Deuteranopia (green-blind)

#003671

Tritanopia (blue-blind)

#00454F

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1d3772;
/* rgb */ color: rgb(29, 55, 114);
/* oklch */ color: oklch(35.2% 0.107 263.9);

Tailwind

colors: {
  custom: {
    50: '#656d9b',
    500: '#1d3772',
    950: '#000000',
  },
}

SCSS

$custom: #1d3772;
$custom-light: #656d9b;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3772",
  "rgb": {
    "r": 29,
    "g": 55,
    "b": 114
  },
  "hsl": {
    "h": 221.647,
    "s": 59.441,
    "l": 28.039
  },
  "oklch": {
    "l": 0.35208,
    "c": 0.10683,
    "h": 263.9
  },
  "luminance": 0.04208
}

Semantic roles & 50–950 ramp

primary

#1D3772

secondary

#A68845

accent

#B245E3

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #1D3772

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

Preview Lab → · Contrast checker → · Palette generator →