#281DAC#281DAC

#281DAC is a dark, highly saturated blue. Relative luminance 0.043; OKLCH L 37.3% C 0.210 H 272.9°. Best body text is #FFFFFF at 11.28:1 contrast (WCAG AA passes).

Color values

HEX	#281DAC
RGB	rgb(40, 29, 172)
HSL	hsl(245, 71%, 39%)
HSV	hsv(245, 83%, 67%)
CMYK	cmyk(76.7%, 83.1%, 0%, 32.5%)
CIE-LAB	lab(24.66, 50.57, -72.40)
CIE-LCH	lch(24.66, 88.31, 304.93°)
OKLab	oklab(37.3% 0.0104 -0.2094)
OKLCH	oklch(37.3% 0.21 272.9)
XYZ	xyz(8.7583, 4.3075, 39.3916)
Luminance	0.0431 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281DAC #A1AC1D

analogous

#1D5AAC #281DAC #6F1DAC

triadic

#281DAC #AC281D #1DAC28

tetradic

#281DAC #AC1D5A #A1AC1D #1DAC6F

square

#281DAC #AC1D5A #A1AC1D #1DAC6F

split-complementary

#281DAC #AC6F1D #5AAC1D

monochromatic

#100B43 #1C1478 #281DAC #392BDB #6A5FE4

Accessibility & contrast

On white

11.28

#281DAC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#281DAC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281DAC

11.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281DAC	#FFFFFF	#000000	##FFFFFF
##281DAC	1.00	11.28	1.86	11.28
#FFFFFF	11.28	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041B0

Deuteranopia (green-blind)

#0034AA

Tritanopia (blue-blind)

#004B66

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #281dac;
/* rgb */ color: rgb(40, 29, 172);
/* oklch */ color: oklch(37.3% 0.210 272.9);

Tailwind

colors: {
  custom: {
    50: '#7a5ec6',
    500: '#281dac',
    950: '#000000',
  },
}

SCSS

$custom: #281dac;
$custom-light: #7a5ec6;
$custom-dark: #000000;

JSON

{
  "hex": "#281dac",
  "rgb": {
    "r": 40,
    "g": 29,
    "b": 172
  },
  "hsl": {
    "h": 244.615,
    "s": 71.144,
    "l": 39.412
  },
  "oklch": {
    "l": 0.37295,
    "c": 0.2097,
    "h": 272.9
  },
  "luminance": 0.04308
}

Semantic roles & 50–950 ramp

primary

#281DAC

secondary

#C0C85C

accent

#EE3AE0

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #281DAC

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

Preview Lab → · Contrast checker → · Palette generator →