#281783#281783

#281783 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.8% C 0.166 H 278.4°. Best body text is #FFFFFF at 13.63:1 contrast (WCAG AA passes).

Color values

HEX	#281783
RGB	rgb(40, 23, 131)
HSL	hsl(249, 70%, 30%)
HSV	hsv(249, 82%, 51%)
CMYK	cmyk(69.5%, 82.4%, 0%, 48.6%)
CIE-LAB	lab(18.81, 40.70, -56.83)
CIE-LCH	lch(18.81, 69.90, 305.61°)
OKLab	oklab(31.83% 0.0243 -0.1641)
OKLCH	oklch(31.83% 0.166 278.4)
XYZ	xyz(5.2769, 2.7021, 21.7118)
Luminance	0.0270 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281783 #728317

analogous

#173C83 #281783 #5E1783

triadic

#281783 #832817 #178328

tetradic

#281783 #83173C #728317 #17835E

square

#281783 #83173C #728317 #17835E

split-complementary

#281783 #835E17 #3C8317

monochromatic

#08051B #180E4F #281783 #3820B7 #5238DC

Accessibility & contrast

On white

13.63

#281783 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#281783 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281783

13.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281783	#FFFFFF	#000000	##FFFFFF
##281783	1.00	13.63	1.54	13.63
#FFFFFF	13.63	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003286

Deuteranopia (green-blind)

#002981

Tritanopia (blue-blind)

#00384D

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #281783;
/* rgb */ color: rgb(40, 23, 131);
/* oklch */ color: oklch(31.8% 0.166 278.4);

Tailwind

colors: {
  custom: {
    50: '#7158a8',
    500: '#281783',
    950: '#000000',
  },
}

SCSS

$custom: #281783;
$custom-light: #7158a8;
$custom-dark: #000000;

JSON

{
  "hex": "#281783",
  "rgb": {
    "r": 40,
    "g": 23,
    "b": 131
  },
  "hsl": {
    "h": 249.444,
    "s": 70.13,
    "l": 30.196
  },
  "oklch": {
    "l": 0.31827,
    "c": 0.16594,
    "h": 278.4
  },
  "luminance": 0.02703
}

Semantic roles & 50–950 ramp

primary

#281783

secondary

#A4B73F

accent

#ED3BD1

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090310

muted

#7B787F

Preview Lab

Preview with #281783

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

Preview Lab → · Contrast checker → · Palette generator →