#281F6F#281F6F

#281F6F is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.8% C 0.132 H 280.4°. Best body text is #FFFFFF at 13.85:1 contrast (WCAG AA passes).

Color values

HEX	#281F6F
RGB	rgb(40, 31, 111)
HSL	hsl(247, 56%, 28%)
HSV	hsv(247, 72%, 44%)
CMYK	cmyk(64%, 72.1%, 0%, 56.5%)
CIE-LAB	lab(18.27, 29.52, -44.92)
CIE-LCH	lch(18.27, 53.75, 303.32°)
OKLab	oklab(30.8% 0.0238 -0.1294)
OKLCH	oklch(30.8% 0.132 280.4)
XYZ	xyz(4.2334, 2.5785, 15.3105)
Luminance	0.0258 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281F6F #666F1F

analogous

#1F3E6F #281F6F #501F6F

triadic

#281F6F #6F281F #1F6F28

tetradic

#281F6F #6F1F3E #666F1F #1F6F50

square

#281F6F #6F1F3E #666F1F #1F6F50

split-complementary

#281F6F #6F501F #3E6F1F

monochromatic

#090718 #17123F #281F6F #392C9F #4F3FC9

Accessibility & contrast

On white

13.85

#281F6F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#281F6F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281F6F

13.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281F6F	#FFFFFF	#000000	##FFFFFF
##281F6F	1.00	13.85	1.52	13.85
#FFFFFF	13.85	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F71

Deuteranopia (green-blind)

#002A6D

Tritanopia (blue-blind)

#003444

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #281f6f;
/* rgb */ color: rgb(40, 31, 111);
/* oklch */ color: oklch(30.8% 0.132 280.4);

Tailwind

colors: {
  custom: {
    50: '#6b5b99',
    500: '#281f6f',
    950: '#000000',
  },
}

SCSS

$custom: #281f6f;
$custom-light: #6b5b99;
$custom-dark: #000000;

JSON

{
  "hex": "#281f6f",
  "rgb": {
    "r": 40,
    "g": 31,
    "b": 111
  },
  "hsl": {
    "h": 246.75,
    "s": 56.338,
    "l": 27.843
  },
  "oklch": {
    "l": 0.30803,
    "c": 0.13162,
    "h": 280.4
  },
  "luminance": 0.02579
}

Semantic roles & 50–950 ramp

primary

#281F6F

secondary

#99A347

accent

#E048CF

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #281F6F

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

Preview Lab → · Contrast checker → · Palette generator →