#281D73#281D73

#281D73 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.9% C 0.139 H 280.2°. Best body text is #FFFFFF at 13.87:1 contrast (WCAG AA passes).

Color values

HEX	#281D73
RGB	rgb(40, 29, 115)
HSL	hsl(248, 60%, 28%)
HSV	hsv(248, 75%, 45%)
CMYK	cmyk(65.2%, 74.8%, 0%, 54.9%)
CIE-LAB	lab(18.22, 32.14, -47.58)
CIE-LCH	lch(18.22, 57.42, 304.04°)
OKLab	oklab(30.89% 0.0247 -0.1372)
OKLCH	oklch(30.89% 0.139 280.2)
XYZ	xyz(4.4080, 2.5673, 16.4796)
Luminance	0.0257 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281D73 #68731D

analogous

#1D3D73 #281D73 #531D73

triadic

#281D73 #73281D #1D7328

tetradic

#281D73 #731D3D #68731D #1D7353

square

#281D73 #731D3D #68731D #1D7353

split-complementary

#281D73 #73531D #3D731D

monochromatic

#080618 #171142 #281D73 #3929A4 #4F3CCE

Accessibility & contrast

On white

13.87

#281D73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#281D73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281D73

13.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281D73	#FFFFFF	#000000	##FFFFFF
##281D73	1.00	13.87	1.51	13.87
#FFFFFF	13.87	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003076

Deuteranopia (green-blind)

#002971

Tritanopia (blue-blind)

#003546

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #281d73;
/* rgb */ color: rgb(40, 29, 115);
/* oklch */ color: oklch(30.9% 0.139 280.2);

Tailwind

colors: {
  custom: {
    50: '#6c5a9c',
    500: '#281d73',
    950: '#000000',
  },
}

SCSS

$custom: #281d73;
$custom-light: #6c5a9c;
$custom-dark: #000000;

JSON

{
  "hex": "#281d73",
  "rgb": {
    "r": 40,
    "g": 29,
    "b": 115
  },
  "hsl": {
    "h": 247.674,
    "s": 59.722,
    "l": 28.235
  },
  "oklch": {
    "l": 0.3089,
    "c": 0.13946,
    "h": 280.2
  },
  "luminance": 0.02568
}

Semantic roles & 50–950 ramp

primary

#281D73

secondary

#9BA745

accent

#E345CF

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#08040E

muted

#7A797E

Preview Lab

Preview with #281D73

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

Preview Lab → · Contrast checker → · Palette generator →