#1D3D84#1D3D84

#1D3D84 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.0% C 0.125 H 263.4°. Best body text is #FFFFFF at 10.23:1 contrast (WCAG AA passes).

Color values

HEX	#1D3D84
RGB	rgb(29, 61, 132)
HSL	hsl(221, 64%, 32%)
HSV	hsv(221, 78%, 52%)
CMYK	cmyk(78%, 53.8%, 0%, 48.2%)
CIE-LAB	lab(27.47, 15.38, -43.30)
CIE-LCH	lch(27.47, 45.95, 289.55°)
OKLab	oklab(38.01% -0.0145 -0.1246)
OKLCH	oklch(38.01% 0.125 263.4)
XYZ	xyz(6.3388, 5.2639, 22.5073)
Luminance	0.0527 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3D84 #84641D

analogous

#1D7184 #1D3D84 #311D84

triadic

#1D3D84 #841D3D #3D841D

tetradic

#1D3D84 #841D71 #84641D #1D8431

square

#1D3D84 #841D71 #84641D #1D8431

split-complementary

#1D3D84 #84311D #71841D

monochromatic

#070F20 #122652 #1D3D84 #2854B6 #4572D6

Accessibility & contrast

On white

10.23

#1D3D84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#1D3D84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3D84

10.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3D84	#FFFFFF	#000000	##FFFFFF
##1D3D84	1.00	10.23	2.05	10.23
#FFFFFF	10.23	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C4687

Deuteranopia (green-blind)

#003C83

Tritanopia (blue-blind)

#004E5A

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1d3d84;
/* rgb */ color: rgb(29, 61, 132);
/* oklch */ color: oklch(38.0% 0.125 263.4);

Tailwind

colors: {
  custom: {
    50: '#6972a8',
    500: '#1d3d84',
    950: '#000000',
  },
}

SCSS

$custom: #1d3d84;
$custom-light: #6972a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3d84",
  "rgb": {
    "r": 29,
    "g": 61,
    "b": 132
  },
  "hsl": {
    "h": 221.359,
    "s": 63.975,
    "l": 31.569
  },
  "oklch": {
    "l": 0.38014,
    "c": 0.12549,
    "h": 263.4
  },
  "luminance": 0.05265
}

Semantic roles & 50–950 ramp

primary

#1D3D84

secondary

#B79446

accent

#B341E7

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #1D3D84

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

Preview Lab → · Contrast checker → · Palette generator →