#281B84#281B84

#281B84 is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.4% C 0.164 H 277.7°. Best body text is #FFFFFF at 13.29:1 contrast (WCAG AA passes).

Color values

HEX	#281B84
RGB	rgb(40, 27, 132)
HSL	hsl(247, 66%, 31%)
HSV	hsv(247, 80%, 52%)
CMYK	cmyk(69.7%, 79.5%, 0%, 48.2%)
CIE-LAB	lab(19.64, 38.95, -56.09)
CIE-LCH	lch(19.64, 68.28, 304.78°)
OKLab	oklab(32.44% 0.0219 -0.162)
OKLCH	oklch(32.44% 0.164 277.7)
XYZ	xyz(5.4305, 2.9005, 22.0990)
Luminance	0.0290 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281B84 #77841B

analogous

#1B4284 #281B84 #5C1B84

triadic

#281B84 #84281B #1B8428

tetradic

#281B84 #841B42 #77841B #1B845C

square

#281B84 #841B42 #77841B #1B845C

split-complementary

#281B84 #845C1B #42841B

monochromatic

#09061E #191151 #281B84 #3725B7 #5441D8

Accessibility & contrast

On white

13.29

#281B84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#281B84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281B84

13.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281B84	#FFFFFF	#000000	##FFFFFF
##281B84	1.00	13.29	1.58	13.29
#FFFFFF	13.29	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003487

Deuteranopia (green-blind)

#002B82

Tritanopia (blue-blind)

#003A4F

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #281b84;
/* rgb */ color: rgb(40, 27, 132);
/* oklch */ color: oklch(32.4% 0.164 277.7);

Tailwind

colors: {
  custom: {
    50: '#715aa9',
    500: '#281b84',
    950: '#000000',
  },
}

SCSS

$custom: #281b84;
$custom-light: #715aa9;
$custom-dark: #000000;

JSON

{
  "hex": "#281b84",
  "rgb": {
    "r": 40,
    "g": 27,
    "b": 132
  },
  "hsl": {
    "h": 247.429,
    "s": 66.038,
    "l": 31.176
  },
  "oklch": {
    "l": 0.3244,
    "c": 0.16352,
    "h": 277.7
  },
  "luminance": 0.02901
}

Semantic roles & 50–950 ramp

primary

#281B84

secondary

#A9B743

accent

#E93FD4

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #281B84

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

Preview Lab → · Contrast checker → · Palette generator →