#281C73#281C73

#281C73 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.7% C 0.141 H 280.4°. Best body text is #FFFFFF at 13.96:1 contrast (WCAG AA passes).

Color values

HEX	#281C73
RGB	rgb(40, 28, 115)
HSL	hsl(248, 61%, 28%)
HSV	hsv(248, 76%, 45%)
CMYK	cmyk(65.2%, 75.7%, 0%, 54.9%)
CIE-LAB	lab(18.00, 32.74, -47.94)
CIE-LCH	lch(18.00, 58.05, 304.33°)
OKLab	oklab(30.74% 0.0255 -0.1383)
OKLCH	oklch(30.74% 0.141 280.4)
XYZ	xyz(4.3839, 2.5191, 16.4716)
Luminance	0.0252 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281C73 #67731C

analogous

#1C3B73 #281C73 #531C73

triadic

#281C73 #73281C #1C7328

tetradic

#281C73 #731C3B #67731C #1C7353

square

#281C73 #731C3B #67731C #1C7353

split-complementary

#281C73 #73531C #3B731C

monochromatic

#090619 #171042 #281C73 #3928A4 #4F3ACF

Accessibility & contrast

On white

13.96

#281C73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#281C73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281C73

13.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281C73	#FFFFFF	#000000	##FFFFFF
##281C73	1.00	13.96	1.50	13.96
#FFFFFF	13.96	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	13.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F76

Deuteranopia (green-blind)

#002971

Tritanopia (blue-blind)

#003445

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #281c73;
/* rgb */ color: rgb(40, 28, 115);
/* oklch */ color: oklch(30.7% 0.141 280.4);

Tailwind

colors: {
  custom: {
    50: '#6d5a9c',
    500: '#281c73',
    950: '#000000',
  },
}

SCSS

$custom: #281c73;
$custom-light: #6d5a9c;
$custom-dark: #000000;

JSON

{
  "hex": "#281c73",
  "rgb": {
    "r": 40,
    "g": 28,
    "b": 115
  },
  "hsl": {
    "h": 248.276,
    "s": 60.839,
    "l": 28.039
  },
  "oklch": {
    "l": 0.30737,
    "c": 0.14061,
    "h": 280.4
  },
  "luminance": 0.02519
}

Semantic roles & 50–950 ramp

primary

#281C73

secondary

#9AA743

accent

#E444CE

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#08040E

muted

#7A797E

Preview Lab

Preview with #281C73

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

Preview Lab → · Contrast checker → · Palette generator →