#1D3687#1D3687

#1D3687 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.8% C 0.139 H 266.4°. Best body text is #FFFFFF at 10.88:1 contrast (WCAG AA passes).

Color values

HEX	#1D3687
RGB	rgb(29, 54, 135)
HSL	hsl(226, 65%, 32%)
HSV	hsv(226, 79%, 53%)
CMYK	cmyk(78.5%, 60%, 0%, 47.1%)
CIE-LAB	lab(25.71, 21.47, -48.04)
CIE-LCH	lch(25.71, 52.62, 294.08°)
OKLab	oklab(36.76% -0.0088 -0.1387)
OKLCH	oklch(36.76% 0.139 266.4)
XYZ	xyz(6.1975, 4.6481, 23.4875)
Luminance	0.0465 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3687 #876E1D

analogous

#1D6B87 #1D3687 #391D87

triadic

#1D3687 #871D36 #36871D

tetradic

#1D3687 #871D6B #876E1D #1D8739

square

#1D3687 #871D6B #876E1D #1D8739

split-complementary

#1D3687 #87391D #6B871D

monochromatic

#070E22 #122255 #1D3687 #284AB9 #4769D7

Accessibility & contrast

On white

10.88

#1D3687 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#1D3687 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3687

10.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3687	#FFFFFF	#000000	##FFFFFF
##1D3687	1.00	10.88	1.93	10.88
#FFFFFF	10.88	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00428A

Deuteranopia (green-blind)

#003885

Tritanopia (blue-blind)

#004A59

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1d3687;
/* rgb */ color: rgb(29, 54, 135);
/* oklch */ color: oklch(36.8% 0.139 266.4);

Tailwind

colors: {
  custom: {
    50: '#6b6cab',
    500: '#1d3687',
    950: '#000000',
  },
}

SCSS

$custom: #1d3687;
$custom-light: #6b6cab;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3687",
  "rgb": {
    "r": 29,
    "g": 54,
    "b": 135
  },
  "hsl": {
    "h": 225.849,
    "s": 64.634,
    "l": 32.157
  },
  "oklch": {
    "l": 0.36757,
    "c": 0.13898,
    "h": 266.4
  },
  "luminance": 0.04649
}

Semantic roles & 50–950 ramp

primary

#1D3687

secondary

#B99E46

accent

#C040E8

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #1D3687

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

Preview Lab → · Contrast checker → · Palette generator →