#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
RGBrgb(28, 53, 136)
HSLhsl(226, 66%, 32%)
HSVhsv(226, 79%, 53%)
CMYKcmyk(79.4%, 61%, 0%, 46.7%)
CIE-LABlab(25.47, 22.45, -49.04)
CIE-LCHlch(25.47, 53.94, 294.60°)
OKLaboklab(36.6% -0.0089 -0.1417)
OKLCHoklch(36.6% 0.142 266.4)
XYZxyz(6.1944, 4.5700, 23.8434)
Luminance0.0457 (WCAG relative)
Temperaturecool
Familyblue

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
##1C35881.0010.971.9110.97
#FFFFFF10.971.0021.001.00
#0000001.9121.001.0021.00
##FFFFFF10.971.0021.001.00

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 →

#1C3588 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva