#281F78#281F78

#281F78 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.7% C 0.144 H 278.9°. Best body text is #FFFFFF at 13.48:1 contrast (WCAG AA passes).

Color values

HEX	#281F78
RGB	rgb(40, 31, 120)
HSL	hsl(246, 59%, 30%)
HSV	hsv(246, 74%, 47%)
CMYK	cmyk(66.7%, 74.2%, 0%, 52.9%)
CIE-LAB	lab(19.17, 32.63, -49.24)
CIE-LCH	lch(19.17, 59.07, 303.54°)
OKLab	oklab(31.72% 0.0222 -0.1421)
OKLCH	oklch(31.72% 0.144 278.9)
XYZ	xyz(4.7541, 2.7868, 18.0530)
Luminance	0.0279 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281F78 #6F781F

analogous

#1F4378 #281F78 #541F78

triadic

#281F78 #78281F #1F7828

tetradic

#281F78 #781F43 #6F781F #1F7854

square

#281F78 #781F43 #6F781F #1F7854

split-complementary

#281F78 #78541F #43781F

monochromatic

#080618 #181247 #281F78 #382CA9 #5143CE

Accessibility & contrast

On white

13.48

#281F78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#281F78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281F78

13.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281F78	#FFFFFF	#000000	##FFFFFF
##281F78	1.00	13.48	1.56	13.48
#FFFFFF	13.48	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00327B

Deuteranopia (green-blind)

#002B76

Tritanopia (blue-blind)

#003749

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #281f78;
/* rgb */ color: rgb(40, 31, 120);
/* oklch */ color: oklch(31.7% 0.144 278.9);

Tailwind

colors: {
  custom: {
    50: '#6d5ca0',
    500: '#281f78',
    950: '#000000',
  },
}

SCSS

$custom: #281f78;
$custom-light: #6d5ca0;
$custom-dark: #000000;

JSON

{
  "hex": "#281f78",
  "rgb": {
    "r": 40,
    "g": 31,
    "b": 120
  },
  "hsl": {
    "h": 246.067,
    "s": 58.94,
    "l": 29.608
  },
  "oklch": {
    "l": 0.31721,
    "c": 0.14381,
    "h": 278.9
  },
  "luminance": 0.02787
}

Semantic roles & 50–950 ramp

primary

#281F78

secondary

#A1AB47

accent

#E246D2

background

#F7F5F9

surface

#EDE9F2

border

#C8C5CC

text

#08040F

muted

#7B797E

Preview Lab

Preview with #281F78

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

Preview Lab → · Contrast checker → · Palette generator →