#281D72#281D72

#281D72 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.8% C 0.138 H 280.4°. Best body text is #FFFFFF at 13.92:1 contrast (WCAG AA passes).

Color values

HEX	#281D72
RGB	rgb(40, 29, 114)
HSL	hsl(248, 59%, 28%)
HSV	hsv(248, 75%, 45%)
CMYK	cmyk(64.9%, 74.6%, 0%, 55.3%)
CIE-LAB	lab(18.12, 31.80, -47.11)
CIE-LCH	lch(18.12, 56.83, 304.02°)
OKLab	oklab(30.79% 0.0249 -0.1358)
OKLCH	oklch(30.79% 0.138 280.4)
XYZ	xyz(4.3507, 2.5444, 16.1782)
Luminance	0.0255 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281D72 #67721D

analogous

#1D3C72 #281D72 #521D72

triadic

#281D72 #72281D #1D7228

tetradic

#281D72 #721D3C #67721D #1D7252

square

#281D72 #721D3C #67721D #1D7252

split-complementary

#281D72 #72521D #3C721D

monochromatic

#090618 #171141 #281D72 #3929A3 #4F3CCD

Accessibility & contrast

On white

13.92

#281D72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#281D72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281D72

13.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281D72	#FFFFFF	#000000	##FFFFFF
##281D72	1.00	13.92	1.51	13.92
#FFFFFF	13.92	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F75

Deuteranopia (green-blind)

#002970

Tritanopia (blue-blind)

#003445

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #281d72;
/* rgb */ color: rgb(40, 29, 114);
/* oklch */ color: oklch(30.8% 0.138 280.4);

Tailwind

colors: {
  custom: {
    50: '#6c5a9b',
    500: '#281d72',
    950: '#000000',
  },
}

SCSS

$custom: #281d72;
$custom-light: #6c5a9b;
$custom-dark: #000000;

JSON

{
  "hex": "#281d72",
  "rgb": {
    "r": 40,
    "g": 29,
    "b": 114
  },
  "hsl": {
    "h": 247.765,
    "s": 59.441,
    "l": 28.039
  },
  "oklch": {
    "l": 0.30786,
    "c": 0.13812,
    "h": 280.4
  },
  "luminance": 0.02545
}

Semantic roles & 50–950 ramp

primary

#281D72

secondary

#9AA645

accent

#E345CE

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#08040E

muted

#7A797E

Preview Lab

Preview with #281D72

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

Preview Lab → · Contrast checker → · Palette generator →