#1C48B3#1C48B3

#1C48B3 is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.3% C 0.177 H 263.7°. Best body text is #FFFFFF at 7.99:1 contrast (WCAG AA passes).

Color values

HEX#1C48B3
RGBrgb(28, 72, 179)
HSLhsl(223, 73%, 41%)
HSVhsv(223, 84%, 70%)
CMYKcmyk(84.4%, 59.8%, 0%, 29.8%)
CIE-LABlab(34.26, 26.50, -60.79)
CIE-LCHlch(34.26, 66.32, 293.55°)
OKLaboklab(44.3% -0.0194 -0.1759)
OKLCHoklch(44.3% 0.177 263.7)
XYZxyz(10.9300, 8.1349, 43.6332)
Luminance0.0814 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1C48B3 #B3871C
analogous
#1C93B3 #1C48B3 #3C1CB3
triadic
#1C48B3 #B31C48 #48B31C
tetradic
#1C48B3 #B31C93 #B3871C #1CB33C
square
#1C48B3 #B31C93 #B3871C #1CB33C
split-complementary
#1C48B3 #B33C1C #93B31C
monochromatic
#0B1D49 #14337E #1C48B3 #2E61DE #6389E7

Accessibility & contrast

On white

7.99
#1C48B3 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.63
#1C48B3 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C48B3
7.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1C48B3#FFFFFF#000000##FFFFFF
##1C48B31.007.992.637.99
#FFFFFF7.991.0021.001.00
#0000002.6321.001.0021.00
##FFFFFF7.991.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0058B7
Deuteranopia (green-blind)
#004AB1
Tritanopia (blue-blind)
#006376
Achromatopsia (no color)
#515151

Design tokens & code

CSS
--color: #1c48b3;
/* rgb */ color: rgb(28, 72, 179);
/* oklch */ color: oklch(44.3% 0.177 263.7);
Tailwind
colors: {
  custom: {
    50: '#757acb',
    500: '#1c48b3',
    950: '#000000',
  },
}
SCSS
$custom: #1c48b3;
$custom-light: #757acb;
$custom-dark: #000000;
JSON
{
  "hex": "#1c48b3",
  "rgb": {
    "r": 28,
    "g": 72,
    "b": 179
  },
  "hsl": {
    "h": 222.517,
    "s": 72.947,
    "l": 40.588
  },
  "oklch": {
    "l": 0.44299,
    "c": 0.17694,
    "h": 263.7
  },
  "luminance": 0.08136
}

Semantic roles & 50–950 ramp

primary
#1C48B3
secondary
#CBAC5F
accent
#BA38F0
background
#F7F7FC
surface
#EEEDF9
border
#C9C8D2
text
#0A0913
muted
#7C7B82

Preview Lab

Preview with #1C48B3

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

Preview Lab → · Contrast checker → · Palette generator →

#1C48B3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva