#1D3E87#1D3E87

#1D3E87 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.5% C 0.129 H 263.3°. Best body text is #FFFFFF at 10.04:1 contrast (WCAG AA passes).

Color values

HEX	#1D3E87
RGB	rgb(29, 62, 135)
HSL	hsl(221, 65%, 32%)
HSV	hsv(221, 79%, 53%)
CMYK	cmyk(78.5%, 54.1%, 0%, 47.1%)
CIE-LAB	lab(27.99, 15.89, -44.32)
CIE-LCH	lch(27.99, 47.09, 289.73°)
OKLab	oklab(38.48% -0.015 -0.1277)
OKLCH	oklch(38.48% 0.129 263.3)
XYZ	xyz(6.6009, 5.4550, 23.6220)
Luminance	0.0546 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3E87 #87661D

analogous

#1D7387 #1D3E87 #311D87

triadic

#1D3E87 #871D3E #3E871D

tetradic

#1D3E87 #871D73 #87661D #1D8731

square

#1D3E87 #871D73 #87661D #1D8731

split-complementary

#1D3E87 #87311D #73871D

monochromatic

#071022 #122755 #1D3E87 #2855B9 #4774D7

Accessibility & contrast

On white

10.04

#1D3E87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#1D3E87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3E87

10.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3E87	#FFFFFF	#000000	##FFFFFF
##1D3E87	1.00	10.04	2.09	10.04
#FFFFFF	10.04	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A478A

Deuteranopia (green-blind)

#003D86

Tritanopia (blue-blind)

#00505C

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1d3e87;
/* rgb */ color: rgb(29, 62, 135);
/* oklch */ color: oklch(38.5% 0.129 263.3);

Tailwind

colors: {
  custom: {
    50: '#6a72ab',
    500: '#1d3e87',
    950: '#000000',
  },
}

SCSS

$custom: #1d3e87;
$custom-light: #6a72ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3e87",
  "rgb": {
    "r": 29,
    "g": 62,
    "b": 135
  },
  "hsl": {
    "h": 221.321,
    "s": 64.634,
    "l": 32.157
  },
  "oklch": {
    "l": 0.38481,
    "c": 0.12852,
    "h": 263.3
  },
  "luminance": 0.05456
}

Semantic roles & 50–950 ramp

primary

#1D3E87

secondary

#B99646

accent

#B340E8

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1D3E87

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

Preview Lab → · Contrast checker → · Palette generator →