#1C3987#1C3987

#1C3987 is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.3% C 0.135 H 265.0°. Best body text is #FFFFFF at 10.58:1 contrast (WCAG AA passes).

Color values

HEX	#1C3987
RGB	rgb(28, 57, 135)
HSL	hsl(224, 66%, 32%)
HSV	hsv(224, 79%, 53%)
CMYK	cmyk(79.3%, 57.8%, 0%, 47.1%)
CIE-LAB	lab(26.51, 19.26, -46.73)
CIE-LCH	lch(26.51, 50.55, 292.40°)
OKLab	oklab(37.35% -0.0118 -0.1348)
OKLCH	oklch(37.35% 0.135 265)
XYZ	xyz(6.3136, 4.9217, 23.5342)
Luminance	0.0492 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3987 #876A1C

analogous

#1C6F87 #1C3987 #341C87

triadic

#1C3987 #871C39 #39871C

tetradic

#1C3987 #871C6F #876A1C #1C8734

square

#1C3987 #871C6F #876A1C #1C8734

split-complementary

#1C3987 #87341C #6F871C

monochromatic

#070E22 #112454 #1C3987 #274EBA #456DD8

Accessibility & contrast

On white

10.58

#1C3987 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#1C3987 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3987

10.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3987	#FFFFFF	#000000	##FFFFFF
##1C3987	1.00	10.58	1.98	10.58
#FFFFFF	10.58	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.58	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: #1c3987;
/* rgb */ color: rgb(28, 57, 135);
/* oklch */ color: oklch(37.3% 0.135 265.0);

Tailwind

colors: {
  custom: {
    50: '#6a6eab',
    500: '#1c3987',
    950: '#000000',
  },
}

SCSS

$custom: #1c3987;
$custom-light: #6a6eab;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3987",
  "rgb": {
    "r": 28,
    "g": 57,
    "b": 135
  },
  "hsl": {
    "h": 223.738,
    "s": 65.644,
    "l": 31.961
  },
  "oklch": {
    "l": 0.37348,
    "c": 0.13536,
    "h": 265
  },
  "luminance": 0.04922
}

Semantic roles & 50–950 ramp

primary

#1C3987

secondary

#BA9A45

accent

#BB3FE9

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #1C3987

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

Preview Lab → · Contrast checker → · Palette generator →