#281F74#281F74

#281F74 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.3% C 0.138 H 279.5°. Best body text is #FFFFFF at 13.65:1 contrast (WCAG AA passes).

Color values

HEX	#281F74
RGB	rgb(40, 31, 116)
HSL	hsl(246, 58%, 29%)
HSV	hsv(246, 73%, 45%)
CMYK	cmyk(65.5%, 73.3%, 0%, 54.5%)
CIE-LAB	lab(18.76, 31.26, -47.33)
CIE-LCH	lch(18.76, 56.72, 303.44°)
OKLab	oklab(31.31% 0.0229 -0.1365)
OKLCH	oklch(31.31% 0.138 279.5)
XYZ	xyz(4.5164, 2.6917, 16.8012)
Luminance	0.0269 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281F74 #6B741F

analogous

#1F4174 #281F74 #531F74

triadic

#281F74 #74281F #1F7428

tetradic

#281F74 #741F41 #6B741F #1F7453

square

#281F74 #741F41 #6B741F #1F7453

split-complementary

#281F74 #74531F #41741F

monochromatic

#080618 #171244 #281F74 #392CA4 #5041CC

Accessibility & contrast

On white

13.65

#281F74 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#281F74 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281F74

13.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281F74	#FFFFFF	#000000	##FFFFFF
##281F74	1.00	13.65	1.54	13.65
#FFFFFF	13.65	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003177

Deuteranopia (green-blind)

#002A72

Tritanopia (blue-blind)

#003647

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #281f74;
/* rgb */ color: rgb(40, 31, 116);
/* oklch */ color: oklch(31.3% 0.138 279.5);

Tailwind

colors: {
  custom: {
    50: '#6d5c9d',
    500: '#281f74',
    950: '#000000',
  },
}

SCSS

$custom: #281f74;
$custom-light: #6d5c9d;
$custom-dark: #000000;

JSON

{
  "hex": "#281f74",
  "rgb": {
    "r": 40,
    "g": 31,
    "b": 116
  },
  "hsl": {
    "h": 246.353,
    "s": 57.823,
    "l": 28.824
  },
  "oklch": {
    "l": 0.31309,
    "c": 0.13844,
    "h": 279.5
  },
  "luminance": 0.02692
}

Semantic roles & 50–950 ramp

primary

#281F74

secondary

#9DA847

accent

#E147D1

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#08040E

muted

#7A797E

Preview Lab

Preview with #281F74

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

Preview Lab → · Contrast checker → · Palette generator →