#281B82#281B82

#281B82 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.2% C 0.161 H 278.0°. Best body text is #FFFFFF at 13.38:1 contrast (WCAG AA passes).

Color values

HEX	#281B82
RGB	rgb(40, 27, 130)
HSL	hsl(248, 66%, 31%)
HSV	hsv(248, 79%, 51%)
CMYK	cmyk(69.2%, 79.2%, 0%, 49%)
CIE-LAB	lab(19.42, 38.30, -55.19)
CIE-LCH	lch(19.42, 67.18, 304.76°)
OKLab	oklab(32.22% 0.0225 -0.1594)
OKLCH	oklch(32.22% 0.161 278)
XYZ	xyz(5.2950, 2.8462, 21.3851)
Luminance	0.0285 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281B82 #75821B

analogous

#1B4182 #281B82 #5B1B82

triadic

#281B82 #82281B #1B8228

tetradic

#281B82 #821B41 #75821B #1B825B

square

#281B82 #821B41 #75821B #1B825B

split-complementary

#281B82 #825B1B #41821B

monochromatic

#09061D #18104F #281B82 #3826B5 #5340D7

Accessibility & contrast

On white

13.38

#281B82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#281B82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281B82

13.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281B82	#FFFFFF	#000000	##FFFFFF
##281B82	1.00	13.38	1.57	13.38
#FFFFFF	13.38	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003385

Deuteranopia (green-blind)

#002B80

Tritanopia (blue-blind)

#00394E

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #281b82;
/* rgb */ color: rgb(40, 27, 130);
/* oklch */ color: oklch(32.2% 0.161 278.0);

Tailwind

colors: {
  custom: {
    50: '#705aa7',
    500: '#281b82',
    950: '#000000',
  },
}

SCSS

$custom: #281b82;
$custom-light: #705aa7;
$custom-dark: #000000;

JSON

{
  "hex": "#281b82",
  "rgb": {
    "r": 40,
    "g": 27,
    "b": 130
  },
  "hsl": {
    "h": 247.573,
    "s": 65.605,
    "l": 30.784
  },
  "oklch": {
    "l": 0.32217,
    "c": 0.16101,
    "h": 278
  },
  "luminance": 0.02847
}

Semantic roles & 50–950 ramp

primary

#281B82

secondary

#A7B643

accent

#E93FD3

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #281B82

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

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