#281B80#281B80

#281B80 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.0% C 0.158 H 278.3°. Best body text is #FFFFFF at 13.47:1 contrast (WCAG AA passes).

Color values

HEX	#281B80
RGB	rgb(40, 27, 128)
HSL	hsl(248, 65%, 30%)
HSV	hsv(248, 79%, 50%)
CMYK	cmyk(68.8%, 78.9%, 0%, 49.8%)
CIE-LAB	lab(19.20, 37.64, -54.29)
CIE-LCH	lch(19.20, 66.07, 304.74°)
OKLab	oklab(32% 0.023 -0.1568)
OKLCH	oklch(32% 0.158 278.3)
XYZ	xyz(5.1620, 2.7931, 20.6850)
Luminance	0.0279 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281B80 #73801B

analogous

#1B4080 #281B80 #5A1B80

triadic

#281B80 #80281B #1B8028

tetradic

#281B80 #801B40 #73801B #1B805A

square

#281B80 #801B40 #73801B #1B805A

split-complementary

#281B80 #805A1B #40801B

monochromatic

#08061B #18104D #281B80 #3826B3 #523FD6

Accessibility & contrast

On white

13.47

#281B80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#281B80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281B80

13.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281B80	#FFFFFF	#000000	##FFFFFF
##281B80	1.00	13.47	1.56	13.47
#FFFFFF	13.47	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003283

Deuteranopia (green-blind)

#002A7E

Tritanopia (blue-blind)

#00394D

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #281b80;
/* rgb */ color: rgb(40, 27, 128);
/* oklch */ color: oklch(32.0% 0.158 278.3);

Tailwind

colors: {
  custom: {
    50: '#705aa6',
    500: '#281b80',
    950: '#000000',
  },
}

SCSS

$custom: #281b80;
$custom-light: #705aa6;
$custom-dark: #000000;

JSON

{
  "hex": "#281b80",
  "rgb": {
    "r": 40,
    "g": 27,
    "b": 128
  },
  "hsl": {
    "h": 247.723,
    "s": 65.161,
    "l": 30.392
  },
  "oklch": {
    "l": 0.31995,
    "c": 0.15848,
    "h": 278.3
  },
  "luminance": 0.02793
}

Semantic roles & 50–950 ramp

primary

#281B80

secondary

#A5B443

accent

#E840D2

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08040F

muted

#7B797F

Preview Lab

Preview with #281B80

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

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