#28237C#28237C

#28237C is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.8% C 0.144 H 277.3°. Best body text is #FFFFFF at 12.95:1 contrast (WCAG AA passes).

Color values

HEX	#28237C
RGB	rgb(40, 35, 124)
HSL	hsl(243, 56%, 31%)
HSV	hsv(243, 72%, 49%)
CMYK	cmyk(67.7%, 71.8%, 0%, 51.4%)
CIE-LAB	lab(20.47, 31.54, -49.65)
CIE-LCH	lch(20.47, 58.82, 302.43°)
OKLab	oklab(32.78% 0.0184 -0.1433)
OKLCH	oklch(32.78% 0.144 277.3)
XYZ	xyz(5.1130, 3.1080, 19.3953)
Luminance	0.0311 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28237C #777C23

analogous

#234A7C #28237C #54237C

triadic

#28237C #7C2823 #237C28

tetradic

#28237C #7C234A #777C23 #237C54

square

#28237C #7C234A #777C23 #237C54

split-complementary

#28237C #7C5423 #4A7C23

monochromatic

#09081D #19164C #28237C #3730AC #544DCD

Accessibility & contrast

On white

12.95

#28237C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#28237C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28237C

12.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28237C	#FFFFFF	#000000	##FFFFFF
##28237C	1.00	12.95	1.62	12.95
#FFFFFF	12.95	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00357F

Deuteranopia (green-blind)

#002E7A

Tritanopia (blue-blind)

#003B4C

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #28237c;
/* rgb */ color: rgb(40, 35, 124);
/* oklch */ color: oklch(32.8% 0.144 277.3);

Tailwind

colors: {
  custom: {
    50: '#6e5fa3',
    500: '#28237c',
    950: '#000000',
  },
}

SCSS

$custom: #28237c;
$custom-light: #6e5fa3;
$custom-dark: #000000;

JSON

{
  "hex": "#28237c",
  "rgb": {
    "r": 40,
    "g": 35,
    "b": 124
  },
  "hsl": {
    "h": 243.371,
    "s": 55.975,
    "l": 31.176
  },
  "oklch": {
    "l": 0.32776,
    "c": 0.14449,
    "h": 277.3
  },
  "luminance": 0.03108
}

Semantic roles & 50–950 ramp

primary

#28237C

secondary

#A9AF4C

accent

#DF49D7

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08040F

muted

#7B797F

Preview Lab

Preview with #28237C

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

Preview Lab → · Contrast checker → · Palette generator →