#1C3588#1C3588

#1C3588 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.6% C 0.142 H 266.4°. Best body text is #FFFFFF at 10.97:1 contrast (WCAG AA passes).

Color values

HEX	#1C3588
RGB	rgb(28, 53, 136)
HSL	hsl(226, 66%, 32%)
HSV	hsv(226, 79%, 53%)
CMYK	cmyk(79.4%, 61%, 0%, 46.7%)
CIE-LAB	lab(25.47, 22.45, -49.04)
CIE-LCH	lch(25.47, 53.94, 294.60°)
OKLab	oklab(36.6% -0.0089 -0.1417)
OKLCH	oklch(36.6% 0.142 266.4)
XYZ	xyz(6.1944, 4.5700, 23.8434)
Luminance	0.0457 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3588 #886F1C

analogous

#1C6B88 #1C3588 #391C88

triadic

#1C3588 #881C35 #35881C

tetradic

#1C3588 #881C6B #886F1C #1C8839

square

#1C3588 #881C6B #886F1C #1C8839

split-complementary

#1C3588 #88391C #6B881C

monochromatic

#070D22 #122155 #1C3588 #2649BB #4668D9

Accessibility & contrast

On white

10.97

#1C3588 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#1C3588 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3588

10.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3588	#FFFFFF	#000000	##FFFFFF
##1C3588	1.00	10.97	1.91	10.97
#FFFFFF	10.97	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	10.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00428B

Deuteranopia (green-blind)

#003786

Tritanopia (blue-blind)

#004A59

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1c3588;
/* rgb */ color: rgb(28, 53, 136);
/* oklch */ color: oklch(36.6% 0.142 266.4);

Tailwind

colors: {
  custom: {
    50: '#6b6bab',
    500: '#1c3588',
    950: '#000000',
  },
}

SCSS

$custom: #1c3588;
$custom-light: #6b6bab;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3588",
  "rgb": {
    "r": 28,
    "g": 53,
    "b": 136
  },
  "hsl": {
    "h": 226.111,
    "s": 65.854,
    "l": 32.157
  },
  "oklch": {
    "l": 0.36596,
    "c": 0.14198,
    "h": 266.4
  },
  "luminance": 0.04571
}

Semantic roles & 50–950 ramp

primary

#1C3588

secondary

#BA9F45

accent

#C13FE9

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #1C3588

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

Preview Lab → · Contrast checker → · Palette generator →