#1D3D79#1D3D79

#1D3D79 is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.1% C 0.109 H 261.6°. Best body text is #FFFFFF at 10.52:1 contrast (WCAG AA passes).

Color values

HEX	#1D3D79
RGB	rgb(29, 61, 121)
HSL	hsl(219, 61%, 29%)
HSV	hsv(219, 76%, 47%)
CMYK	cmyk(76%, 49.6%, 0%, 52.5%)
CIE-LAB	lab(26.67, 10.92, -37.69)
CIE-LCH	lch(26.67, 39.24, 286.15°)
OKLab	oklab(37.15% -0.016 -0.1082)
OKLCH	oklch(37.15% 0.109 261.6)
XYZ	xyz(5.6254, 4.9786, 18.7499)
Luminance	0.0498 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3D79 #79591D

analogous

#1D6B79 #1D3D79 #2B1D79

triadic

#1D3D79 #791D3D #3D791D

tetradic

#1D3D79 #791D6B #79591D #1D792B

square

#1D3D79 #791D6B #79591D #1D792B

split-complementary

#1D3D79 #792B1D #6B791D

monochromatic

#060C19 #112448 #1D3D79 #2956AA #3F72D1

Accessibility & contrast

On white

10.52

#1D3D79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#1D3D79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3D79

10.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3D79	#FFFFFF	#000000	##FFFFFF
##1D3D79	1.00	10.52	2.00	10.52
#FFFFFF	10.52	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C447B

Deuteranopia (green-blind)

#043B78

Tritanopia (blue-blind)

#004B55

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1d3d79;
/* rgb */ color: rgb(29, 61, 121);
/* oklch */ color: oklch(37.1% 0.109 261.6);

Tailwind

colors: {
  custom: {
    50: '#6772a0',
    500: '#1d3d79',
    950: '#000000',
  },
}

SCSS

$custom: #1d3d79;
$custom-light: #6772a0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3d79",
  "rgb": {
    "r": 29,
    "g": 61,
    "b": 121
  },
  "hsl": {
    "h": 219.13,
    "s": 61.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.37148,
    "c": 0.10934,
    "h": 261.6
  },
  "luminance": 0.04979
}

Semantic roles & 50–950 ramp

primary

#1D3D79

secondary

#AD8945

accent

#AC43E4

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070F

muted

#7A7A7E

Preview Lab

Preview with #1D3D79

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

Preview Lab → · Contrast checker → · Palette generator →