#281999#281999

#281999 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 34.6% C 0.191 H 275.1°. Best body text is #FFFFFF at 12.43:1 contrast (WCAG AA passes).

Color values

HEX#281999
RGBrgb(40, 25, 153)
HSLhsl(247, 72%, 35%)
HSVhsv(247, 84%, 60%)
CMYKcmyk(73.9%, 83.7%, 0%, 40%)
CIE-LABlab(21.75, 46.59, -65.68)
CIE-LCHlch(21.75, 80.52, 305.35°)
OKLaboklab(34.62% 0.0169 -0.1899)
OKLCHoklch(34.62% 0.191 275.1)
XYZxyz(6.9706, 3.4456, 30.4285)
Luminance0.0345 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#281999 #8A9919
analogous
#194A99 #281999 #681999
triadic
#281999 #992819 #199928
tetradic
#281999 #99194A #8A9919 #199968
square
#281999 #99194A #8A9919 #199968
split-complementary
#281999 #996819 #4A9919
monochromatic
#0C0830 #1A1064 #281999 #3622CE #5D4BE2

Accessibility & contrast

On white

12.43
#281999 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.69
#281999 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281999
12.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##281999#FFFFFF#000000##FFFFFF
##2819991.0012.431.6912.43
#FFFFFF12.431.0021.001.00
#0000001.6921.001.0021.00
##FFFFFF12.431.0021.001.00

Color blindness preview

Protanopia (red-blind)
#003A9C
Deuteranopia (green-blind)
#002E97
Tritanopia (blue-blind)
#00425B
Achromatopsia (no color)
#343434

Design tokens & code

CSS
--color: #281999;
/* rgb */ color: rgb(40, 25, 153);
/* oklch */ color: oklch(34.6% 0.191 275.1);
Tailwind
colors: {
  custom: {
    50: '#765ab8',
    500: '#281999',
    950: '#000000',
  },
}
SCSS
$custom: #281999;
$custom-light: #765ab8;
$custom-dark: #000000;
JSON
{
  "hex": "#281999",
  "rgb": {
    "r": 40,
    "g": 25,
    "b": 153
  },
  "hsl": {
    "h": 247.031,
    "s": 71.91,
    "l": 34.902
  },
  "oklch": {
    "l": 0.3462,
    "c": 0.19063,
    "h": 275.1
  },
  "luminance": 0.03446
}

Semantic roles & 50–950 ramp

primary
#281999
secondary
#B5C34A
accent
#EF39D9
background
#F7F5FB
surface
#EEE9F6
border
#C9C5D0
text
#0A0412
muted
#7C7981

Preview Lab

Preview with #281999

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

Preview Lab → · Contrast checker → · Palette generator →

#281999 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva