#1D3487#1D3487

#1D3487 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.3% C 0.142 H 267.0°. Best body text is #FFFFFF at 11.09:1 contrast (WCAG AA passes).

Color values

HEX	#1D3487
RGB	rgb(29, 52, 135)
HSL	hsl(227, 65%, 32%)
HSV	hsv(227, 79%, 53%)
CMYK	cmyk(78.5%, 61.5%, 0%, 47.1%)
CIE-LAB	lab(25.16, 22.86, -48.94)
CIE-LCH	lch(25.16, 54.01, 295.04°)
OKLab	oklab(36.35% -0.0073 -0.1414)
OKLCH	oklch(36.35% 0.142 267)
XYZ	xyz(6.1063, 4.4658, 23.4571)
Luminance	0.0447 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3487 #87701D

analogous

#1D6987 #1D3487 #3B1D87

triadic

#1D3487 #871D34 #34871D

tetradic

#1D3487 #871D69 #87701D #1D873B

square

#1D3487 #871D69 #87701D #1D873B

split-complementary

#1D3487 #873B1D #69871D

monochromatic

#070D22 #122155 #1D3487 #2847B9 #4766D7

Accessibility & contrast

On white

11.09

#1D3487 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#1D3487 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3487

11.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3487	#FFFFFF	#000000	##FFFFFF
##1D3487	1.00	11.09	1.89	11.09
#FFFFFF	11.09	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00418A

Deuteranopia (green-blind)

#003785

Tritanopia (blue-blind)

#004958

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1d3487;
/* rgb */ color: rgb(29, 52, 135);
/* oklch */ color: oklch(36.3% 0.142 267.0);

Tailwind

colors: {
  custom: {
    50: '#6b6bab',
    500: '#1d3487',
    950: '#000000',
  },
}

SCSS

$custom: #1d3487;
$custom-light: #6b6bab;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3487",
  "rgb": {
    "r": 29,
    "g": 52,
    "b": 135
  },
  "hsl": {
    "h": 226.981,
    "s": 64.634,
    "l": 32.157
  },
  "oklch": {
    "l": 0.36345,
    "c": 0.14157,
    "h": 267
  },
  "luminance": 0.04466
}

Semantic roles & 50–950 ramp

primary

#1D3487

secondary

#B9A046

accent

#C340E8

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #1D3487

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

Preview Lab → · Contrast checker → · Palette generator →