#281FA9#281FA9

#281FA9 is a dark, highly saturated blue. Relative luminance 0.043; OKLCH L 37.2% C 0.205 H 273.0°. Best body text is #FFFFFF at 11.30:1 contrast (WCAG AA passes).

Color values

HEX	#281FA9
RGB	rgb(40, 31, 169)
HSL	hsl(244, 69%, 39%)
HSV	hsv(244, 82%, 66%)
CMYK	cmyk(76.3%, 81.7%, 0%, 33.7%)
CIE-LAB	lab(24.62, 48.71, -70.66)
CIE-LCH	lch(24.62, 85.82, 304.58°)
OKLab	oklab(37.16% 0.0106 -0.2044)
OKLCH	oklch(37.16% 0.205 273)
XYZ	xyz(8.5241, 4.2948, 37.9082)
Luminance	0.0430 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281FA9 #A0A91F

analogous

#1F5BA9 #281FA9 #6D1FA9

triadic

#281FA9 #A9281F #1FA928

tetradic

#281FA9 #A91F5B #A0A91F #1FA96D

square

#281FA9 #A91F5B #A0A91F #1FA96D

split-complementary

#281FA9 #A96D1F #5BA91F

monochromatic

#100C42 #1C1675 #281FA9 #382DD8 #6960E2

Accessibility & contrast

On white

11.30

#281FA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#281FA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281FA9

11.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281FA9	#FFFFFF	#000000	##FFFFFF
##281FA9	1.00	11.30	1.86	11.30
#FFFFFF	11.30	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041AD

Deuteranopia (green-blind)

#0034A7

Tritanopia (blue-blind)

#004B65

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #281fa9;
/* rgb */ color: rgb(40, 31, 169);
/* oklch */ color: oklch(37.2% 0.205 273.0);

Tailwind

colors: {
  custom: {
    50: '#795fc4',
    500: '#281fa9',
    950: '#000000',
  },
}

SCSS

$custom: #281fa9;
$custom-light: #795fc4;
$custom-dark: #000000;

JSON

{
  "hex": "#281fa9",
  "rgb": {
    "r": 40,
    "g": 31,
    "b": 169
  },
  "hsl": {
    "h": 243.913,
    "s": 69,
    "l": 39.216
  },
  "oklch": {
    "l": 0.37164,
    "c": 0.2047,
    "h": 273
  },
  "luminance": 0.04296
}

Semantic roles & 50–950 ramp

primary

#281FA9

secondary

#C0C75D

accent

#EC3CE0

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #281FA9

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

Preview Lab → · Contrast checker → · Palette generator →