#281FA8#281FA8

#281FA8 is a dark, highly saturated blue. Relative luminance 0.043; OKLCH L 37.0% C 0.204 H 273.1°. Best body text is #FFFFFF at 11.34:1 contrast (WCAG AA passes).

Color values

HEX	#281FA8
RGB	rgb(40, 31, 168)
HSL	hsl(244, 69%, 39%)
HSV	hsv(244, 82%, 66%)
CMYK	cmyk(76.2%, 81.5%, 0%, 34.1%)
CIE-LAB	lab(24.50, 48.40, -70.25)
CIE-LCH	lch(24.50, 85.31, 304.56°)
OKLab	oklab(37.05% 0.0109 -0.2032)
OKLCH	oklch(37.05% 0.204 273.1)
XYZ	xyz(8.4306, 4.2574, 37.4156)
Luminance	0.0426 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281FA8 #9FA81F

analogous

#1F5BA8 #281FA8 #6D1FA8

triadic

#281FA8 #A8281F #1FA828

tetradic

#281FA8 #A81F5B #9FA81F #1FA86D

square

#281FA8 #A81F5B #9FA81F #1FA86D

split-complementary

#281FA8 #A86D1F #5BA81F

monochromatic

#0F0C41 #1C1574 #281FA8 #372CD8 #6860E2

Accessibility & contrast

On white

11.34

#281FA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#281FA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281FA8

11.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281FA8	#FFFFFF	#000000	##FFFFFF
##281FA8	1.00	11.34	1.85	11.34
#FFFFFF	11.34	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0040AC

Deuteranopia (green-blind)

#0034A6

Tritanopia (blue-blind)

#004A64

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #281fa8;
/* rgb */ color: rgb(40, 31, 168);
/* oklch */ color: oklch(37.0% 0.204 273.1);

Tailwind

colors: {
  custom: {
    50: '#795fc3',
    500: '#281fa8',
    950: '#000000',
  },
}

SCSS

$custom: #281fa8;
$custom-light: #795fc3;
$custom-dark: #000000;

JSON

{
  "hex": "#281fa8",
  "rgb": {
    "r": 40,
    "g": 31,
    "b": 168
  },
  "hsl": {
    "h": 243.942,
    "s": 68.844,
    "l": 39.02
  },
  "oklch": {
    "l": 0.37048,
    "c": 0.20353,
    "h": 273.1
  },
  "luminance": 0.04258
}

Semantic roles & 50–950 ramp

primary

#281FA8

secondary

#BFC65D

accent

#EC3CE0

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #281FA8

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

Preview Lab → · Contrast checker → · Palette generator →