#281B76#281B76

#281B76 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.9% C 0.146 H 280.1°. Best body text is #FFFFFF at 13.92:1 contrast (WCAG AA passes).

Color values

HEX	#281B76
RGB	rgb(40, 27, 118)
HSL	hsl(249, 63%, 28%)
HSV	hsv(249, 77%, 46%)
CMYK	cmyk(66.1%, 77.1%, 0%, 53.7%)
CIE-LAB	lab(18.11, 34.34, -49.70)
CIE-LCH	lch(18.11, 60.40, 304.64°)
OKLab	oklab(30.91% 0.0255 -0.1434)
OKLCH	oklch(30.91% 0.146 280.1)
XYZ	xyz(4.5360, 2.5426, 17.3878)
Luminance	0.0254 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281B76 #69761B

analogous

#1B3B76 #281B76 #551B76

triadic

#281B76 #76281B #1B7628

tetradic

#281B76 #761B3B #69761B #1B7655

square

#281B76 #761B3B #69761B #1B7655

split-complementary

#281B76 #76551B #3B761B

monochromatic

#080619 #171044 #281B76 #3926A8 #4F3AD2

Accessibility & contrast

On white

13.92

#281B76 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#281B76 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281B76

13.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281B76	#FFFFFF	#000000	##FFFFFF
##281B76	1.00	13.92	1.51	13.92
#FFFFFF	13.92	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003079

Deuteranopia (green-blind)

#002974

Tritanopia (blue-blind)

#003547

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #281b76;
/* rgb */ color: rgb(40, 27, 118);
/* oklch */ color: oklch(30.9% 0.146 280.1);

Tailwind

colors: {
  custom: {
    50: '#6d599e',
    500: '#281b76',
    950: '#000000',
  },
}

SCSS

$custom: #281b76;
$custom-light: #6d599e;
$custom-dark: #000000;

JSON

{
  "hex": "#281b76",
  "rgb": {
    "r": 40,
    "g": 27,
    "b": 118
  },
  "hsl": {
    "h": 248.571,
    "s": 62.759,
    "l": 28.431
  },
  "oklch": {
    "l": 0.30906,
    "c": 0.14566,
    "h": 280.1
  },
  "luminance": 0.02543
}

Semantic roles & 50–950 ramp

primary

#281B76

secondary

#9CAA42

accent

#E642CE

background

#F7F5F9

surface

#EDE9F2

border

#C8C5CC

text

#08040E

muted

#7B797E

Preview Lab

Preview with #281B76

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

Preview Lab → · Contrast checker → · Palette generator →