#1D3473#1D3473

#1D3473 is a dark, moderate blue. Relative luminance 0.040; OKLCH L 34.6% C 0.112 H 265.7°. Best body text is #FFFFFF at 11.73:1 contrast (WCAG AA passes).

Color values

HEX	#1D3473
RGB	rgb(29, 52, 115)
HSL	hsl(224, 60%, 28%)
HSV	hsv(224, 75%, 45%)
CMYK	cmyk(74.8%, 54.8%, 0%, 54.9%)
CIE-LAB	lab(23.52, 14.83, -38.97)
CIE-LCH	lch(23.52, 41.70, 290.83°)
OKLab	oklab(34.6% -0.0085 -0.1121)
OKLCH	oklch(34.6% 0.112 265.7)
XYZ	xyz(4.8281, 3.9545, 16.7252)
Luminance	0.0396 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3473 #735C1D

analogous

#1D5F73 #1D3473 #311D73

triadic

#1D3473 #731D34 #34731D

tetradic

#1D3473 #731D5F #735C1D #1D7331

square

#1D3473 #731D5F #735C1D #1D7331

split-complementary

#1D3473 #73311D #5F731D

monochromatic

#060B18 #111E42 #1D3473 #294AA4 #3C63CE

Accessibility & contrast

On white

11.73

#1D3473 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#1D3473 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3473

11.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3473	#FFFFFF	#000000	##FFFFFF
##1D3473	1.00	11.73	1.79	11.73
#FFFFFF	11.73	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A3C75

Deuteranopia (green-blind)

#003472

Tritanopia (blue-blind)

#00434E

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1d3473;
/* rgb */ color: rgb(29, 52, 115);
/* oklch */ color: oklch(34.6% 0.112 265.7);

Tailwind

colors: {
  custom: {
    50: '#666b9c',
    500: '#1d3473',
    950: '#000000',
  },
}

SCSS

$custom: #1d3473;
$custom-light: #666b9c;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3473",
  "rgb": {
    "r": 29,
    "g": 52,
    "b": 115
  },
  "hsl": {
    "h": 223.953,
    "s": 59.722,
    "l": 28.235
  },
  "oklch": {
    "l": 0.34603,
    "c": 0.11241,
    "h": 265.7
  },
  "luminance": 0.03955
}

Semantic roles & 50–950 ramp

primary

#1D3473

secondary

#A78D45

accent

#B945E3

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1D3473

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

Preview Lab → · Contrast checker → · Palette generator →