#281DA8#281DA8

#281DA8 is a dark, highly saturated blue. Relative luminance 0.042; OKLCH L 36.8% C 0.205 H 273.2°. Best body text is #FFFFFF at 11.47:1 contrast (WCAG AA passes).

Color values

HEX	#281DA8
RGB	rgb(40, 29, 168)
HSL	hsl(245, 71%, 39%)
HSV	hsv(245, 83%, 66%)
CMYK	cmyk(76.2%, 82.7%, 0%, 34.1%)
CIE-LAB	lab(24.18, 49.34, -70.79)
CIE-LCH	lch(24.18, 86.29, 304.88°)
OKLab	oklab(36.82% 0.0115 -0.2048)
OKLCH	oklch(36.82% 0.205 273.2)
XYZ	xyz(8.3800, 4.1561, 37.3988)
Luminance	0.0416 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281DA8 #9DA81D

analogous

#1D57A8 #281DA8 #6D1DA8

triadic

#281DA8 #A8281D #1DA828

tetradic

#281DA8 #A81D57 #9DA81D #1DA86D

square

#281DA8 #A81D57 #9DA81D #1DA86D

split-complementary

#281DA8 #A86D1D #57A81D

monochromatic

#0F0B40 #1C1474 #281DA8 #3628DA #675CE3

Accessibility & contrast

On white

11.47

#281DA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#281DA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281DA8

11.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281DA8	#FFFFFF	#000000	##FFFFFF
##281DA8	1.00	11.47	1.83	11.47
#FFFFFF	11.47	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0040AC

Deuteranopia (green-blind)

#0033A6

Tritanopia (blue-blind)

#004A64

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #281da8;
/* rgb */ color: rgb(40, 29, 168);
/* oklch */ color: oklch(36.8% 0.205 273.2);

Tailwind

colors: {
  custom: {
    50: '#795ec3',
    500: '#281da8',
    950: '#000000',
  },
}

SCSS

$custom: #281da8;
$custom-light: #795ec3;
$custom-dark: #000000;

JSON

{
  "hex": "#281da8",
  "rgb": {
    "r": 40,
    "g": 29,
    "b": 168
  },
  "hsl": {
    "h": 244.748,
    "s": 70.558,
    "l": 38.627
  },
  "oklch": {
    "l": 0.36823,
    "c": 0.20508,
    "h": 273.2
  },
  "luminance": 0.04157
}

Semantic roles & 50–950 ramp

primary

#281DA8

secondary

#BEC75A

accent

#ED3ADF

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #281DA8

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

Preview Lab → · Contrast checker → · Palette generator →