#281F6B#281F6B

#281F6B is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.4% C 0.126 H 281.2°. Best body text is #FFFFFF at 14.01:1 contrast (WCAG AA passes).

Color values

HEX	#281F6B
RGB	rgb(40, 31, 107)
HSL	hsl(247, 55%, 27%)
HSV	hsv(247, 71%, 42%)
CMYK	cmyk(62.6%, 71%, 0%, 58%)
CIE-LAB	lab(17.88, 28.13, -42.95)
CIE-LCH	lch(17.88, 51.34, 303.22°)
OKLab	oklab(30.41% 0.0245 -0.1237)
OKLCH	oklch(30.41% 0.126 281.2)
XYZ	xyz(4.0181, 2.4923, 14.1764)
Luminance	0.0249 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281F6B #626B1F

analogous

#1F3C6B #281F6B #4E1F6B

triadic

#281F6B #6B281F #1F6B28

tetradic

#281F6B #6B1F3C #626B1F #1F6B4E

square

#281F6B #6B1F3C #626B1F #1F6B4E

split-complementary

#281F6B #6B4E1F #3C6B1F

monochromatic

#090718 #16113C #281F6B #3A2D9A #4E3DC7

Accessibility & contrast

On white

14.01

#281F6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#281F6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281F6B

14.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281F6B	#FFFFFF	#000000	##FFFFFF
##281F6B	1.00	14.01	1.50	14.01
#FFFFFF	14.01	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	14.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E6D

Deuteranopia (green-blind)

#00296A

Tritanopia (blue-blind)

#003342

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #281f6b;
/* rgb */ color: rgb(40, 31, 107);
/* oklch */ color: oklch(30.4% 0.126 281.2);

Tailwind

colors: {
  custom: {
    50: '#6b5b96',
    500: '#281f6b',
    950: '#000000',
  },
}

SCSS

$custom: #281f6b;
$custom-light: #6b5b96;
$custom-dark: #000000;

JSON

{
  "hex": "#281f6b",
  "rgb": {
    "r": 40,
    "g": 31,
    "b": 107
  },
  "hsl": {
    "h": 247.105,
    "s": 55.072,
    "l": 27.059
  },
  "oklch": {
    "l": 0.30407,
    "c": 0.12607,
    "h": 281.2
  },
  "luminance": 0.02493
}

Semantic roles & 50–950 ramp

primary

#281F6B

secondary

#959F47

accent

#DE49CD

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07040D

muted

#7A797E

Preview Lab

Preview with #281F6B

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

Preview Lab → · Contrast checker → · Palette generator →