#281B7A#281B7A

#281B7A is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.3% C 0.151 H 279.4°. Best body text is #FFFFFF at 13.74:1 contrast (WCAG AA passes).

Color values

HEX	#281B7A
RGB	rgb(40, 27, 122)
HSL	hsl(248, 64%, 29%)
HSV	hsv(248, 78%, 48%)
CMYK	cmyk(67.2%, 77.9%, 0%, 52.2%)
CIE-LAB	lab(18.54, 35.67, -51.55)
CIE-LCH	lch(18.54, 62.69, 304.68°)
OKLab	oklab(31.34% 0.0245 -0.1488)
OKLCH	oklch(31.34% 0.151 279.4)
XYZ	xyz(4.7787, 2.6397, 18.6663)
Luminance	0.0264 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281B7A #6D7A1B

analogous

#1B3D7A #281B7A #581B7A

triadic

#281B7A #7A281B #1B7A28

tetradic

#281B7A #7A1B3D #6D7A1B #1B7A58

square

#281B7A #7A1B3D #6D7A1B #1B7A58

split-complementary

#281B7A #7A581B #3D7A1B

monochromatic

#080619 #181048 #281B7A #3826AC #503CD4

Accessibility & contrast

On white

13.74

#281B7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#281B7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281B7A

13.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281B7A	#FFFFFF	#000000	##FFFFFF
##281B7A	1.00	13.74	1.53	13.74
#FFFFFF	13.74	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00317D

Deuteranopia (green-blind)

#002978

Tritanopia (blue-blind)

#003649

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #281b7a;
/* rgb */ color: rgb(40, 27, 122);
/* oklch */ color: oklch(31.3% 0.151 279.4);

Tailwind

colors: {
  custom: {
    50: '#6e59a1',
    500: '#281b7a',
    950: '#000000',
  },
}

SCSS

$custom: #281b7a;
$custom-light: #6e59a1;
$custom-dark: #000000;

JSON

{
  "hex": "#281b7a",
  "rgb": {
    "r": 40,
    "g": 27,
    "b": 122
  },
  "hsl": {
    "h": 248.211,
    "s": 63.758,
    "l": 29.216
  },
  "oklch": {
    "l": 0.31338,
    "c": 0.15084,
    "h": 279.4
  },
  "luminance": 0.0264
}

Semantic roles & 50–950 ramp

primary

#281B7A

secondary

#9FAE43

accent

#E741D0

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08040F

muted

#7B797F

Preview Lab

Preview with #281B7A

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

Preview Lab → · Contrast checker → · Palette generator →