#281D9C#281D9C

#281D9C is a dark, vivid blue. Relative luminance 0.037; OKLCH L 35.4% C 0.191 H 274.4°. Best body text is #FFFFFF at 12.03:1 contrast (WCAG AA passes).

Color values

HEX	#281D9C
RGB	rgb(40, 29, 156)
HSL	hsl(245, 69%, 36%)
HSV	hsv(245, 81%, 61%)
CMYK	cmyk(74.4%, 81.4%, 0%, 38.8%)
CIE-LAB	lab(22.76, 45.61, -65.85)
CIE-LCH	lch(22.76, 80.10, 304.71°)
OKLab	oklab(35.42% 0.0146 -0.1904)
OKLCH	oklch(35.42% 0.191 274.4)
XYZ	xyz(7.3132, 3.7294, 31.7805)
Luminance	0.0373 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281D9C #919C1D

analogous

#1D529C #281D9C #681D9C

triadic

#281D9C #9C281D #1D9C28

tetradic

#281D9C #9C1D52 #919C1D #1D9C68

square

#281D9C #9C1D52 #919C1D #1D9C68

split-complementary

#281D9C #9C681D #529C1D

monochromatic

#0E0A35 #1B1368 #281D9C #3527D0 #6054DF

Accessibility & contrast

On white

12.03

#281D9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#281D9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281D9C

12.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281D9C	#FFFFFF	#000000	##FFFFFF
##281D9C	1.00	12.03	1.75	12.03
#FFFFFF	12.03	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C9F

Deuteranopia (green-blind)

#00309A

Tritanopia (blue-blind)

#00455D

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #281d9c;
/* rgb */ color: rgb(40, 29, 156);
/* oklch */ color: oklch(35.4% 0.191 274.4);

Tailwind

colors: {
  custom: {
    50: '#765dbb',
    500: '#281d9c',
    950: '#000000',
  },
}

SCSS

$custom: #281d9c;
$custom-light: #765dbb;
$custom-dark: #000000;

JSON

{
  "hex": "#281d9c",
  "rgb": {
    "r": 40,
    "g": 29,
    "b": 156
  },
  "hsl": {
    "h": 245.197,
    "s": 68.649,
    "l": 36.275
  },
  "oklch": {
    "l": 0.35423,
    "c": 0.19099,
    "h": 274.4
  },
  "luminance": 0.0373
}

Semantic roles & 50–950 ramp

primary

#281D9C

secondary

#B9C252

accent

#EB3CDC

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #281D9C

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

Preview Lab → · Contrast checker → · Palette generator →