#28237A#28237A

#28237A is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.6% C 0.142 H 277.6°. Best body text is #FFFFFF at 13.03:1 contrast (WCAG AA passes).

Color values

HEX	#28237A
RGB	rgb(40, 35, 122)
HSL	hsl(243, 55%, 31%)
HSV	hsv(243, 71%, 48%)
CMYK	cmyk(67.2%, 71.3%, 0%, 52.2%)
CIE-LAB	lab(20.27, 30.84, -48.70)
CIE-LCH	lch(20.27, 57.64, 302.34°)
OKLab	oklab(32.57% 0.0187 -0.1405)
OKLCH	oklch(32.57% 0.142 277.6)
XYZ	xyz(4.9878, 3.0579, 18.7360)
Luminance	0.0306 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28237A #757A23

analogous

#23497A #28237A #53237A

triadic

#28237A #7A2823 #237A28

tetradic

#28237A #7A2349 #757A23 #237A53

square

#28237A #7A2349 #757A23 #237A53

split-complementary

#28237A #7A5323 #497A23

monochromatic

#09081B #18154A #28237A #3831AA #534CCC

Accessibility & contrast

On white

13.03

#28237A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#28237A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28237A

13.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28237A	#FFFFFF	#000000	##FFFFFF
##28237A	1.00	13.03	1.61	13.03
#FFFFFF	13.03	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00347D

Deuteranopia (green-blind)

#002D78

Tritanopia (blue-blind)

#003A4B

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #28237a;
/* rgb */ color: rgb(40, 35, 122);
/* oklch */ color: oklch(32.6% 0.142 277.6);

Tailwind

colors: {
  custom: {
    50: '#6d5fa1',
    500: '#28237a',
    950: '#000000',
  },
}

SCSS

$custom: #28237a;
$custom-light: #6d5fa1;
$custom-dark: #000000;

JSON

{
  "hex": "#28237a",
  "rgb": {
    "r": 40,
    "g": 35,
    "b": 122
  },
  "hsl": {
    "h": 243.448,
    "s": 55.414,
    "l": 30.784
  },
  "oklch": {
    "l": 0.32574,
    "c": 0.14177,
    "h": 277.6
  },
  "luminance": 0.03058
}

Semantic roles & 50–950 ramp

primary

#28237A

secondary

#A7AD4C

accent

#DF49D6

background

#F7F5FA

surface

#EDE9F3

border

#C8C5CD

text

#08040F

muted

#7B797F

Preview Lab

Preview with #28237A

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

Preview Lab → · Contrast checker → · Palette generator →