#1C3A80#1C3A80

#1C3A80 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.0% C 0.124 H 263.9°. Best body text is #FFFFFF at 10.68:1 contrast (WCAG AA passes).

Color values

HEX#1C3A80
RGBrgb(28, 58, 128)
HSLhsl(222, 64%, 31%)
HSVhsv(222, 78%, 50%)
CMYKcmyk(78.1%, 54.7%, 0%, 49.8%)
CIE-LABlab(26.25, 15.73, -42.79)
CIE-LCHlch(26.25, 45.59, 290.18°)
OKLaboklab(36.98% -0.0132 -0.1232)
OKLCHoklch(36.98% 0.124 263.9)
XYZxyz(5.8868, 4.8308, 21.0401)
Luminance0.0483 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1C3A80 #80621C
analogous
#1C6C80 #1C3A80 #301C80
triadic
#1C3A80 #801C3A #3A801C
tetradic
#1C3A80 #801C6C #80621C #1C8030
square
#1C3A80 #801C6C #80621C #1C8030
split-complementary
#1C3A80 #80301C #6C801C
monochromatic
#060C1C #11234E #1C3A80 #2751B2 #416ED5

Accessibility & contrast

On white

10.68
#1C3A80 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.97
#1C3A80 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3A80
10.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1C3A80#FFFFFF#000000##FFFFFF
##1C3A801.0010.681.9710.68
#FFFFFF10.681.0021.001.00
#0000001.9721.001.0021.00
##FFFFFF10.681.0021.001.00

Color blindness preview

Protanopia (red-blind)
#074382
Deuteranopia (green-blind)
#003A7F
Tritanopia (blue-blind)
#004B57
Achromatopsia (no color)
#3E3E3E

Design tokens & code

CSS
--color: #1c3a80;
/* rgb */ color: rgb(28, 58, 128);
/* oklch */ color: oklch(37.0% 0.124 263.9);
Tailwind
colors: {
  custom: {
    50: '#686fa5',
    500: '#1c3a80',
    950: '#000000',
  },
}
SCSS
$custom: #1c3a80;
$custom-light: #686fa5;
$custom-dark: #000000;
JSON
{
  "hex": "#1c3a80",
  "rgb": {
    "r": 28,
    "g": 58,
    "b": 128
  },
  "hsl": {
    "h": 222,
    "s": 64.103,
    "l": 30.588
  },
  "oklch": {
    "l": 0.36975,
    "c": 0.12393,
    "h": 263.9
  },
  "luminance": 0.04832
}

Semantic roles & 50–950 ramp

primary
#1C3A80
secondary
#B39244
accent
#B541E7
background
#F6F6FA
surface
#EBECF4
border
#C6C7CE
text
#07070F
muted
#7A7A7F

Preview Lab

Preview with #1C3A80

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

Preview Lab → · Contrast checker → · Palette generator →

#1C3A80 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva