#28287D#28287D

#28287D is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.7% C 0.140 H 275.9°. Best body text is #FFFFFF at 12.43:1 contrast (WCAG AA passes).

Color values

HEX	#28287D
RGB	rgb(40, 40, 125)
HSL	hsl(240, 52%, 32%)
HSV	hsv(240, 68%, 49%)
CMYK	cmyk(68%, 68%, 0%, 51%)
CIE-LAB	lab(21.76, 28.68, -48.17)
CIE-LCH	lch(21.76, 56.07, 300.77°)
OKLab	oklab(33.74% 0.0143 -0.139)
OKLCH	oklch(33.74% 0.14 275.9)
XYZ	xyz(5.3343, 3.4489, 19.7827)
Luminance	0.0345 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28287D #7D7D28

analogous

#28537D #28287D #53287D

triadic

#28287D #7D2828 #287D28

tetradic

#28287D #7D2853 #7D7D28 #287D53

square

#28287D #7D2853 #7D7D28 #287D53

split-complementary

#28287D #7D5328 #537D28

monochromatic

#0A0A20 #19194F #28287D #3737AB #5656C9

Accessibility & contrast

On white

12.43

#28287D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#28287D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28287D

12.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28287D	#FFFFFF	#000000	##FFFFFF
##28287D	1.00	12.43	1.69	12.43
#FFFFFF	12.43	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003880

Deuteranopia (green-blind)

#00307B

Tritanopia (blue-blind)

#003E4E

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #28287d;
/* rgb */ color: rgb(40, 40, 125);
/* oklch */ color: oklch(33.7% 0.140 275.9);

Tailwind

colors: {
  custom: {
    50: '#6e62a3',
    500: '#28287d',
    950: '#000000',
  },
}

SCSS

$custom: #28287d;
$custom-light: #6e62a3;
$custom-dark: #000000;

JSON

{
  "hex": "#28287d",
  "rgb": {
    "r": 40,
    "g": 40,
    "b": 125
  },
  "hsl": {
    "h": 240,
    "s": 51.515,
    "l": 32.353
  },
  "oklch": {
    "l": 0.33736,
    "c": 0.13972,
    "h": 275.9
  },
  "luminance": 0.03449
}

Semantic roles & 50–950 ramp

primary

#28287D

secondary

#AEAE53

accent

#DB4DDB

background

#F7F5FA

surface

#EDEAF4

border

#C8C6CE

text

#08050F

muted

#7B797F

Preview Lab

Preview with #28287D

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

Preview Lab → · Contrast checker → · Palette generator →