#281D71#281D71

#281D71 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.7% C 0.137 H 280.6°. Best body text is #FFFFFF at 13.96:1 contrast (WCAG AA passes).

Color values

HEX	#281D71
RGB	rgb(40, 29, 113)
HSL	hsl(248, 59%, 28%)
HSV	hsv(248, 74%, 44%)
CMYK	cmyk(64.6%, 74.3%, 0%, 55.7%)
CIE-LAB	lab(18.02, 31.46, -46.63)
CIE-LCH	lch(18.02, 56.24, 304.00°)
OKLab	oklab(30.68% 0.0251 -0.1344)
OKLCH	oklch(30.68% 0.137 280.6)
XYZ	xyz(4.2941, 2.5218, 15.8800)
Luminance	0.0252 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281D71 #66711D

analogous

#1D3C71 #281D71 #521D71

triadic

#281D71 #71281D #1D7128

tetradic

#281D71 #711D3C #66711D #1D7152

square

#281D71 #711D3C #66711D #1D7152

split-complementary

#281D71 #71521D #3C711D

monochromatic

#090618 #171140 #281D71 #3929A2 #4F3CCD

Accessibility & contrast

On white

13.96

#281D71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#281D71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281D71

13.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281D71	#FFFFFF	#000000	##FFFFFF
##281D71	1.00	13.96	1.50	13.96
#FFFFFF	13.96	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	13.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F74

Deuteranopia (green-blind)

#00296F

Tritanopia (blue-blind)

#003445

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #281d71;
/* rgb */ color: rgb(40, 29, 113);
/* oklch */ color: oklch(30.7% 0.137 280.6);

Tailwind

colors: {
  custom: {
    50: '#6c5a9b',
    500: '#281d71',
    950: '#000000',
  },
}

SCSS

$custom: #281d71;
$custom-light: #6c5a9b;
$custom-dark: #000000;

JSON

{
  "hex": "#281d71",
  "rgb": {
    "r": 40,
    "g": 29,
    "b": 113
  },
  "hsl": {
    "h": 247.857,
    "s": 59.155,
    "l": 27.843
  },
  "oklch": {
    "l": 0.30683,
    "c": 0.13678,
    "h": 280.6
  },
  "luminance": 0.02522
}

Semantic roles & 50–950 ramp

primary

#281D71

secondary

#99A544

accent

#E245CE

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#08040E

muted

#7A797E

Preview Lab

Preview with #281D71

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

Preview Lab → · Contrast checker → · Palette generator →