#1D3987#1D3987

#1D3987 is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.4% C 0.135 H 265.3°. Best body text is #FFFFFF at 10.57:1 contrast (WCAG AA passes).

Color values

HEX	#1D3987
RGB	rgb(29, 57, 135)
HSL	hsl(224, 65%, 32%)
HSV	hsv(224, 79%, 53%)
CMYK	cmyk(78.5%, 57.8%, 0%, 47.1%)
CIE-LAB	lab(26.55, 19.38, -46.66)
CIE-LCH	lch(26.55, 50.53, 292.56°)
OKLab	oklab(37.39% -0.011 -0.1346)
OKLCH	oklch(37.39% 0.135 265.3)
XYZ	xyz(6.3415, 4.9360, 23.5355)
Luminance	0.0494 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3987 #876B1D

analogous

#1D6E87 #1D3987 #361D87

triadic

#1D3987 #871D39 #39871D

tetradic

#1D3987 #871D6E #876B1D #1D8736

square

#1D3987 #871D6E #876B1D #1D8736

split-complementary

#1D3987 #87361D #6E871D

monochromatic

#070E22 #122455 #1D3987 #284EB9 #476DD7

Accessibility & contrast

On white

10.57

#1D3987 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#1D3987 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3987

10.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3987	#FFFFFF	#000000	##FFFFFF
##1D3987	1.00	10.57	1.99	10.57
#FFFFFF	10.57	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00448A

Deuteranopia (green-blind)

#003A85

Tritanopia (blue-blind)

#004C5A

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1d3987;
/* rgb */ color: rgb(29, 57, 135);
/* oklch */ color: oklch(37.4% 0.135 265.3);

Tailwind

colors: {
  custom: {
    50: '#6a6eab',
    500: '#1d3987',
    950: '#000000',
  },
}

SCSS

$custom: #1d3987;
$custom-light: #6a6eab;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3987",
  "rgb": {
    "r": 29,
    "g": 57,
    "b": 135
  },
  "hsl": {
    "h": 224.151,
    "s": 64.634,
    "l": 32.157
  },
  "oklch": {
    "l": 0.37391,
    "c": 0.13507,
    "h": 265.3
  },
  "luminance": 0.04937
}

Semantic roles & 50–950 ramp

primary

#1D3987

secondary

#B99B46

accent

#BB40E8

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #1D3987

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

Preview Lab → · Contrast checker → · Palette generator →