#281C8F#281C8F

#281C8F is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.8% C 0.176 H 276.0°. Best body text is #FFFFFF at 12.70:1 contrast (WCAG AA passes).

Color values

HEX	#281C8F
RGB	rgb(40, 28, 143)
HSL	hsl(246, 67%, 34%)
HSV	hsv(246, 80%, 56%)
CMYK	cmyk(72%, 80.4%, 0%, 43.9%)
CIE-LAB	lab(21.07, 41.98, -60.61)
CIE-LCH	lch(21.07, 73.73, 304.71°)
OKLab	oklab(33.81% 0.0185 -0.1752)
OKLCH	oklch(33.81% 0.176 276)
XYZ	xyz(6.2466, 3.2642, 26.2821)
Luminance	0.0326 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281C8F #838F1C

analogous

#1C498F #281C8F #611C8F

triadic

#281C8F #8F281C #1C8F28

tetradic

#281C8F #8F1C49 #838F1C #1C8F61

square

#281C8F #8F1C49 #838F1C #1C8F61

split-complementary

#281C8F #8F611C #498F1C

monochromatic

#0B0829 #1A125C #281C8F #3626C2 #594ADC

Accessibility & contrast

On white

12.70

#281C8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#281C8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281C8F

12.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281C8F	#FFFFFF	#000000	##FFFFFF
##281C8F	1.00	12.70	1.65	12.70
#FFFFFF	12.70	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003792

Deuteranopia (green-blind)

#002D8D

Tritanopia (blue-blind)

#003F55

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #281c8f;
/* rgb */ color: rgb(40, 28, 143);
/* oklch */ color: oklch(33.8% 0.176 276.0);

Tailwind

colors: {
  custom: {
    50: '#735bb1',
    500: '#281c8f',
    950: '#000000',
  },
}

SCSS

$custom: #281c8f;
$custom-light: #735bb1;
$custom-dark: #000000;

JSON

{
  "hex": "#281c8f",
  "rgb": {
    "r": 40,
    "g": 28,
    "b": 143
  },
  "hsl": {
    "h": 246.261,
    "s": 67.251,
    "l": 33.529
  },
  "oklch": {
    "l": 0.33809,
    "c": 0.17618,
    "h": 276
  },
  "luminance": 0.03265
}

Semantic roles & 50–950 ramp

primary

#281C8F

secondary

#B1BE49

accent

#EA3ED8

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #281C8F

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

Preview Lab → · Contrast checker → · Palette generator →