#281F97#281F97

#281F97 is a dark, vivid blue. Relative luminance 0.037; OKLCH L 35.1% C 0.183 H 274.7°. Best body text is #FFFFFF at 12.12:1 contrast (WCAG AA passes).

Color values

HEX	#281F97
RGB	rgb(40, 31, 151)
HSL	hsl(245, 66%, 36%)
HSV	hsv(245, 79%, 59%)
CMYK	cmyk(73.5%, 79.5%, 0%, 40.8%)
CIE-LAB	lab(22.53, 42.99, -63.15)
CIE-LCH	lch(22.53, 76.39, 304.25°)
OKLab	oklab(35.1% 0.0151 -0.1826)
OKLCH	oklch(35.1% 0.183 274.7)
XYZ	xyz(6.9491, 3.6648, 29.6133)
Luminance	0.0367 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281F97 #8E971F

analogous

#1F5297 #281F97 #641F97

triadic

#281F97 #97281F #1F9728

tetradic

#281F97 #971F52 #8E971F #1F9764

square

#281F97 #971F52 #8E971F #1F9764

split-complementary

#281F97 #97641F #52971F

monochromatic

#0D0A31 #1B1564 #281F97 #3529CA #5F54DC

Accessibility & contrast

On white

12.12

#281F97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#281F97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281F97

12.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281F97	#FFFFFF	#000000	##FFFFFF
##281F97	1.00	12.12	1.73	12.12
#FFFFFF	12.12	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B9A

Deuteranopia (green-blind)

#003095

Tritanopia (blue-blind)

#00435B

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #281f97;
/* rgb */ color: rgb(40, 31, 151);
/* oklch */ color: oklch(35.1% 0.183 274.7);

Tailwind

colors: {
  custom: {
    50: '#755eb7',
    500: '#281f97',
    950: '#000000',
  },
}

SCSS

$custom: #281f97;
$custom-light: #755eb7;
$custom-dark: #000000;

JSON

{
  "hex": "#281f97",
  "rgb": {
    "r": 40,
    "g": 31,
    "b": 151
  },
  "hsl": {
    "h": 244.5,
    "s": 65.934,
    "l": 35.686
  },
  "oklch": {
    "l": 0.35097,
    "c": 0.18325,
    "h": 274.7
  },
  "luminance": 0.03665
}

Semantic roles & 50–950 ramp

primary

#281F97

secondary

#B7BF52

accent

#E93FDC

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #281F97

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

Preview Lab → · Contrast checker → · Palette generator →