#281C79#281C79

#281C79 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.4% C 0.148 H 279.3°. Best body text is #FFFFFF at 13.70:1 contrast (WCAG AA passes).

Color values

HEX	#281C79
RGB	rgb(40, 28, 121)
HSL	hsl(248, 62%, 29%)
HSV	hsv(248, 77%, 47%)
CMYK	cmyk(66.9%, 76.9%, 0%, 52.5%)
CIE-LAB	lab(18.63, 34.76, -50.76)
CIE-LCH	lch(18.63, 61.52, 304.40°)
OKLab	oklab(31.37% 0.0241 -0.1465)
OKLCH	oklch(31.37% 0.148 279.3)
XYZ	xyz(4.7404, 2.6617, 18.3494)
Luminance	0.0266 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281C79 #6D791C

analogous

#1C3F79 #281C79 #571C79

triadic

#281C79 #79281C #1C7928

tetradic

#281C79 #791C3F #6D791C #1C7957

square

#281C79 #791C3F #6D791C #1C7957

split-complementary

#281C79 #79571C #3F791C

monochromatic

#080619 #181047 #281C79 #3828AB #503DD2

Accessibility & contrast

On white

13.70

#281C79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#281C79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281C79

13.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281C79	#FFFFFF	#000000	##FFFFFF
##281C79	1.00	13.70	1.53	13.70
#FFFFFF	13.70	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00317C

Deuteranopia (green-blind)

#002A77

Tritanopia (blue-blind)

#003649

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #281c79;
/* rgb */ color: rgb(40, 28, 121);
/* oklch */ color: oklch(31.4% 0.148 279.3);

Tailwind

colors: {
  custom: {
    50: '#6e5aa1',
    500: '#281c79',
    950: '#000000',
  },
}

SCSS

$custom: #281c79;
$custom-light: #6e5aa1;
$custom-dark: #000000;

JSON

{
  "hex": "#281c79",
  "rgb": {
    "r": 40,
    "g": 28,
    "b": 121
  },
  "hsl": {
    "h": 247.742,
    "s": 62.416,
    "l": 29.216
  },
  "oklch": {
    "l": 0.31373,
    "c": 0.14848,
    "h": 279.3
  },
  "luminance": 0.02662
}

Semantic roles & 50–950 ramp

primary

#281C79

secondary

#9FAD44

accent

#E542D0

background

#F7F5FA

surface

#EDE9F3

border

#C8C5CD

text

#08040F

muted

#7B797F

Preview Lab

Preview with #281C79

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

Preview Lab → · Contrast checker → · Palette generator →