#281B73#281B73

#281B73 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.6% C 0.142 H 280.7°. Best body text is #FFFFFF at 14.05:1 contrast (WCAG AA passes).

Color values

HEX	#281B73
RGB	rgb(40, 27, 115)
HSL	hsl(249, 62%, 28%)
HSV	hsv(249, 77%, 45%)
CMYK	cmyk(65.2%, 76.5%, 0%, 54.9%)
CIE-LAB	lab(17.79, 33.33, -48.28)
CIE-LCH	lch(17.79, 58.67, 304.62°)
OKLab	oklab(30.59% 0.0262 -0.1393)
OKLCH	oklch(30.59% 0.142 280.7)
XYZ	xyz(4.3605, 2.4725, 16.4638)
Luminance	0.0247 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281B73 #66731B

analogous

#1B3A73 #281B73 #541B73

triadic

#281B73 #73281B #1B7328

tetradic

#281B73 #731B3A #66731B #1B7354

square

#281B73 #731B3A #66731B #1B7354

split-complementary

#281B73 #73541B #3A731B

monochromatic

#090619 #170F41 #281B73 #3927A5 #4F38D0

Accessibility & contrast

On white

14.05

#281B73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#281B73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281B73

14.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281B73	#FFFFFF	#000000	##FFFFFF
##281B73	1.00	14.05	1.49	14.05
#FFFFFF	14.05	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F76

Deuteranopia (green-blind)

#002871

Tritanopia (blue-blind)

#003445

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #281b73;
/* rgb */ color: rgb(40, 27, 115);
/* oklch */ color: oklch(30.6% 0.142 280.7);

Tailwind

colors: {
  custom: {
    50: '#6d599c',
    500: '#281b73',
    950: '#000000',
  },
}

SCSS

$custom: #281b73;
$custom-light: #6d599c;
$custom-dark: #000000;

JSON

{
  "hex": "#281b73",
  "rgb": {
    "r": 40,
    "g": 27,
    "b": 115
  },
  "hsl": {
    "h": 248.864,
    "s": 61.972,
    "l": 27.843
  },
  "oklch": {
    "l": 0.30587,
    "c": 0.14174,
    "h": 280.7
  },
  "luminance": 0.02473
}

Semantic roles & 50–950 ramp

primary

#281B73

secondary

#99A842

accent

#E543CD

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#08030E

muted

#7A787E

Preview Lab

Preview with #281B73

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

Preview Lab → · Contrast checker → · Palette generator →