#281FAD#281FAD

#281FAD is a dark, highly saturated blue. Relative luminance 0.044; OKLCH L 37.6% C 0.209 H 272.6°. Best body text is #FFFFFF at 11.11:1 contrast (WCAG AA passes).

Color values

HEX#281FAD
RGBrgb(40, 31, 173)
HSLhsl(244, 70%, 40%)
HSVhsv(244, 82%, 68%)
CMYKcmyk(76.9%, 82.1%, 0%, 32.2%)
CIE-LABlab(25.10, 49.95, -72.28)
CIE-LCHlch(25.10, 87.86, 304.65°)
OKLaboklab(37.63% 0.0096 -0.2091)
OKLCHoklch(37.63% 0.209 272.6)
XYZxyz(8.9054, 4.4473, 39.9161)
Luminance0.0445 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#281FAD #A4AD1F
analogous
#1F5DAD #281FAD #6F1FAD
triadic
#281FAD #AD281F #1FAD28
tetradic
#281FAD #AD1F5D #A4AD1F #1FAD6F
square
#281FAD #AD1F5D #A4AD1F #1FAD6F
split-complementary
#281FAD #AD6F1F #5DAD1F
monochromatic
#100C45 #1C1679 #281FAD #3A2FDA #6B63E3

Accessibility & contrast

On white

11.11
#281FAD on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.89
#281FAD on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281FAD
11.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##281FAD#FFFFFF#000000##FFFFFF
##281FAD1.0011.111.8911.11
#FFFFFF11.111.0021.001.00
#0000001.8921.001.0021.00
##FFFFFF11.111.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0042B1
Deuteranopia (green-blind)
#0035AB
Tritanopia (blue-blind)
#004C67
Achromatopsia (no color)
#3C3C3C

Design tokens & code

CSS
--color: #281fad;
/* rgb */ color: rgb(40, 31, 173);
/* oklch */ color: oklch(37.6% 0.209 272.6);
Tailwind
colors: {
  custom: {
    50: '#7a5fc7',
    500: '#281fad',
    950: '#000000',
  },
}
SCSS
$custom: #281fad;
$custom-light: #7a5fc7;
$custom-dark: #000000;
JSON
{
  "hex": "#281fad",
  "rgb": {
    "r": 40,
    "g": 31,
    "b": 173
  },
  "hsl": {
    "h": 243.803,
    "s": 69.608,
    "l": 40
  },
  "oklch": {
    "l": 0.37631,
    "c": 0.20934,
    "h": 272.6
  },
  "luminance": 0.04448
}

Semantic roles & 50–950 ramp

primary
#281FAD
secondary
#C1C860
accent
#EC3BE1
background
#F8F5FC
surface
#EFE9F8
border
#CAC5D1
text
#0B0513
muted
#7C7982

Preview Lab

Preview with #281FAD

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

Preview Lab → · Contrast checker → · Palette generator →

#281FAD Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva