#281B87#281B87

#281B87 is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.8% C 0.167 H 277.3°. Best body text is #FFFFFF at 13.15:1 contrast (WCAG AA passes).

Color values

HEX	#281B87
RGB	rgb(40, 27, 135)
HSL	hsl(247, 67%, 32%)
HSV	hsv(247, 80%, 53%)
CMYK	cmyk(70.4%, 80%, 0%, 47.1%)
CIE-LAB	lab(19.98, 39.93, -57.42)
CIE-LCH	lch(19.98, 69.93, 304.82°)
OKLab	oklab(32.78% 0.0211 -0.1659)
OKLCH	oklch(32.78% 0.167 277.3)
XYZ	xyz(5.6388, 2.9837, 23.1957)
Luminance	0.0298 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281B87 #7A871B

analogous

#1B4487 #281B87 #5E1B87

triadic

#281B87 #87281B #1B8728

tetradic

#281B87 #871B44 #7A871B #1B875E

square

#281B87 #871B44 #7A871B #1B875E

split-complementary

#281B87 #875E1B #44871B

monochromatic

#0A0721 #191154 #281B87 #3725BA #5543D9

Accessibility & contrast

On white

13.15

#281B87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#281B87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281B87

13.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281B87	#FFFFFF	#000000	##FFFFFF
##281B87	1.00	13.15	1.60	13.15
#FFFFFF	13.15	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00358A

Deuteranopia (green-blind)

#002C85

Tritanopia (blue-blind)

#003B51

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #281b87;
/* rgb */ color: rgb(40, 27, 135);
/* oklch */ color: oklch(32.8% 0.167 277.3);

Tailwind

colors: {
  custom: {
    50: '#715aab',
    500: '#281b87',
    950: '#000000',
  },
}

SCSS

$custom: #281b87;
$custom-light: #715aab;
$custom-dark: #000000;

JSON

{
  "hex": "#281b87",
  "rgb": {
    "r": 40,
    "g": 27,
    "b": 135
  },
  "hsl": {
    "h": 247.222,
    "s": 66.667,
    "l": 31.765
  },
  "oklch": {
    "l": 0.32777,
    "c": 0.16725,
    "h": 277.3
  },
  "luminance": 0.02984
}

Semantic roles & 50–950 ramp

primary

#281B87

secondary

#ACBA44

accent

#EA3ED5

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #281B87

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

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