#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
RGB	rgb(40, 25, 153)
HSL	hsl(247, 72%, 35%)
HSV	hsv(247, 84%, 60%)
CMYK	cmyk(73.9%, 83.7%, 0%, 40%)
CIE-LAB	lab(21.75, 46.59, -65.68)
CIE-LCH	lch(21.75, 80.52, 305.35°)
OKLab	oklab(34.62% 0.0169 -0.1899)
OKLCH	oklch(34.62% 0.191 275.1)
XYZ	xyz(6.9706, 3.4456, 30.4285)
Luminance	0.0345 (WCAG relative)
Temperature	cool
Family	blue

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
##281999	1.00	12.43	1.69	12.43
#FFFFFF	12.43	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.43	1.00	21.00	1.00

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 →