#1C47B3#1C47B3

#1C47B3 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.1% C 0.178 H 263.9°. Best body text is #FFFFFF at 8.07:1 contrast (WCAG AA passes).

Color values

HEX#1C47B3
RGBrgb(28, 71, 179)
HSLhsl(223, 73%, 41%)
HSVhsv(223, 84%, 70%)
CMYKcmyk(84.4%, 60.3%, 0%, 29.8%)
CIE-LABlab(34.00, 27.16, -61.23)
CIE-LCHlch(34.00, 66.98, 293.93°)
OKLaboklab(44.1% -0.0188 -0.1771)
OKLCHoklch(44.1% 0.178 263.9)
XYZxyz(10.8659, 8.0067, 43.6118)
Luminance0.0801 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1C47B3 #B3881C
analogous
#1C92B3 #1C47B3 #3C1CB3
triadic
#1C47B3 #B31C47 #47B31C
tetradic
#1C47B3 #B31C92 #B3881C #1CB33C
square
#1C47B3 #B31C92 #B3881C #1CB33C
split-complementary
#1C47B3 #B33C1C #92B31C
monochromatic
#0B1D49 #14327E #1C47B3 #2E60DE #6388E7

Accessibility & contrast

On white

8.07
#1C47B3 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.60
#1C47B3 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C47B3
8.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1C47B3#FFFFFF#000000##FFFFFF
##1C47B31.008.072.608.07
#FFFFFF8.071.0021.001.00
#0000002.6021.001.0021.00
##FFFFFF8.071.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0057B7
Deuteranopia (green-blind)
#0049B1
Tritanopia (blue-blind)
#006376
Achromatopsia (no color)
#505050

Design tokens & code

CSS
--color: #1c47b3;
/* rgb */ color: rgb(28, 71, 179);
/* oklch */ color: oklch(44.1% 0.178 263.9);
Tailwind
colors: {
  custom: {
    50: '#7579cb',
    500: '#1c47b3',
    950: '#000000',
  },
}
SCSS
$custom: #1c47b3;
$custom-light: #7579cb;
$custom-dark: #000000;
JSON
{
  "hex": "#1c47b3",
  "rgb": {
    "r": 28,
    "g": 71,
    "b": 179
  },
  "hsl": {
    "h": 222.914,
    "s": 72.947,
    "l": 40.588
  },
  "oklch": {
    "l": 0.441,
    "c": 0.17815,
    "h": 263.9
  },
  "luminance": 0.08008
}

Semantic roles & 50–950 ramp

primary
#1C47B3
secondary
#CBAD5F
accent
#BB38F0
background
#F7F7FC
surface
#EEEDF9
border
#C9C8D2
text
#0A0913
muted
#7C7B82

Preview Lab

Preview with #1C47B3

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

Preview Lab → · Contrast checker → · Palette generator →

#1C47B3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva