#281B74#281B74

#281B74 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.7% C 0.143 H 280.5°. Best body text is #FFFFFF at 14.01:1 contrast (WCAG AA passes).

Color values

HEX	#281B74
RGB	rgb(40, 27, 116)
HSL	hsl(249, 62%, 28%)
HSV	hsv(249, 77%, 45%)
CMYK	cmyk(65.5%, 76.7%, 0%, 54.5%)
CIE-LAB	lab(17.90, 33.67, -48.76)
CIE-LCH	lch(17.90, 59.25, 304.63°)
OKLab	oklab(30.69% 0.026 -0.1407)
OKLCH	oklch(30.69% 0.143 280.5)
XYZ	xyz(4.4184, 2.4956, 16.7685)
Luminance	0.0250 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281B74 #67741B

analogous

#1B3A74 #281B74 #541B74

triadic

#281B74 #74281B #1B7428

tetradic

#281B74 #741B3A #67741B #1B7454

square

#281B74 #741B3A #67741B #1B7454

split-complementary

#281B74 #74541B #3A741B

monochromatic

#090619 #170F42 #281B74 #3927A6 #4F39D1

Accessibility & contrast

On white

14.01

#281B74 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#281B74 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281B74

14.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281B74	#FFFFFF	#000000	##FFFFFF
##281B74	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)

#002F77

Deuteranopia (green-blind)

#002872

Tritanopia (blue-blind)

#003446

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #281b74;
/* rgb */ color: rgb(40, 27, 116);
/* oklch */ color: oklch(30.7% 0.143 280.5);

Tailwind

colors: {
  custom: {
    50: '#6d599d',
    500: '#281b74',
    950: '#000000',
  },
}

SCSS

$custom: #281b74;
$custom-light: #6d599d;
$custom-dark: #000000;

JSON

{
  "hex": "#281b74",
  "rgb": {
    "r": 40,
    "g": 27,
    "b": 116
  },
  "hsl": {
    "h": 248.764,
    "s": 62.238,
    "l": 28.039
  },
  "oklch": {
    "l": 0.30693,
    "c": 0.14305,
    "h": 280.5
  },
  "luminance": 0.02496
}

Semantic roles & 50–950 ramp

primary

#281B74

secondary

#9AA942

accent

#E542CE

background

#F7F5F9

surface

#EDE9F2

border

#C8C5CC

text

#08030E

muted

#7B787E

Preview Lab

Preview with #281B74

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

Preview Lab → · Contrast checker → · Palette generator →