#281D9E#281D9E

#281D9E is a dark, vivid blue. Relative luminance 0.038; OKLCH L 35.7% C 0.193 H 274.2°. Best body text is #FFFFFF at 11.93:1 contrast (WCAG AA passes).

Color values

HEX	#281D9E
RGB	rgb(40, 29, 158)
HSL	hsl(245, 69%, 37%)
HSV	hsv(245, 82%, 62%)
CMYK	cmyk(74.7%, 81.6%, 0%, 38%)
CIE-LAB	lab(22.99, 46.24, -66.68)
CIE-LCH	lch(22.99, 81.15, 304.74°)
OKLab	oklab(35.65% 0.0141 -0.1929)
OKLCH	oklch(35.65% 0.193 274.2)
XYZ	xyz(7.4839, 3.7977, 32.6797)
Luminance	0.0380 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281D9E #939E1D

analogous

#1D539E #281D9E #691D9E

triadic

#281D9E #9E281D #1D9E28

tetradic

#281D9E #9E1D53 #939E1D #1D9E69

square

#281D9E #9E1D53 #939E1D #1D9E69

split-complementary

#281D9E #9E691D #539E1D

monochromatic

#0E0A37 #1B146A #281D9E #3526D2 #6156E0

Accessibility & contrast

On white

11.93

#281D9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#281D9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281D9E

11.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281D9E	#FFFFFF	#000000	##FFFFFF
##281D9E	1.00	11.93	1.76	11.93
#FFFFFF	11.93	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003DA2

Deuteranopia (green-blind)

#00319C

Tritanopia (blue-blind)

#00455E

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #281d9e;
/* rgb */ color: rgb(40, 29, 158);
/* oklch */ color: oklch(35.7% 0.193 274.2);

Tailwind

colors: {
  custom: {
    50: '#775dbc',
    500: '#281d9e',
    950: '#000000',
  },
}

SCSS

$custom: #281d9e;
$custom-light: #775dbc;
$custom-dark: #000000;

JSON

{
  "hex": "#281d9e",
  "rgb": {
    "r": 40,
    "g": 29,
    "b": 158
  },
  "hsl": {
    "h": 245.116,
    "s": 68.984,
    "l": 36.667
  },
  "oklch": {
    "l": 0.35654,
    "c": 0.19338,
    "h": 274.2
  },
  "luminance": 0.03798
}

Semantic roles & 50–950 ramp

primary

#281D9E

secondary

#BAC354

accent

#EC3CDD

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #281D9E

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

Preview Lab → · Contrast checker → · Palette generator →