#28288E#28288E

#28288E is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.4% C 0.163 H 274.3°. Best body text is #FFFFFF at 11.77:1 contrast (WCAG AA passes).

Color values

HEX	#28288E
RGB	rgb(40, 40, 142)
HSL	hsl(240, 56%, 36%)
HSV	hsv(240, 72%, 56%)
CMYK	cmyk(71.8%, 71.8%, 0%, 44.3%)
CIE-LAB	lab(23.41, 34.76, -56.13)
CIE-LCH	lch(23.41, 66.02, 301.77°)
OKLab	oklab(35.43% 0.0121 -0.1623)
OKLCH	oklch(35.43% 0.163 274.3)
XYZ	xyz(6.5147, 3.9211, 25.9995)
Luminance	0.0392 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28288E #8E8E28

analogous

#285B8E #28288E #5B288E

triadic

#28288E #8E2828 #288E28

tetradic

#28288E #8E285B #8E8E28 #288E5B

square

#28288E #8E285B #8E8E28 #288E5B

split-complementary

#28288E #8E5B28 #5B8E28

monochromatic

#0D0D2F #1B1B5E #28288E #3535BE #5F5FD2

Accessibility & contrast

On white

11.77

#28288E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#28288E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28288E

11.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28288E	#FFFFFF	#000000	##FFFFFF
##28288E	1.00	11.77	1.78	11.77
#FFFFFF	11.77	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D91

Deuteranopia (green-blind)

#00338C

Tritanopia (blue-blind)

#004458

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #28288e;
/* rgb */ color: rgb(40, 40, 142);
/* oklch */ color: oklch(35.4% 0.163 274.3);

Tailwind

colors: {
  custom: {
    50: '#7263b0',
    500: '#28288e',
    950: '#000000',
  },
}

SCSS

$custom: #28288e;
$custom-light: #7263b0;
$custom-dark: #000000;

JSON

{
  "hex": "#28288e",
  "rgb": {
    "r": 40,
    "g": 40,
    "b": 142
  },
  "hsl": {
    "h": 240,
    "s": 56.044,
    "l": 35.686
  },
  "oklch": {
    "l": 0.35432,
    "c": 0.16271,
    "h": 274.3
  },
  "luminance": 0.03922
}

Semantic roles & 50–950 ramp

primary

#28288E

secondary

#B7B75B

accent

#DF48DF

background

#F7F5FB

surface

#EDEAF6

border

#C8C6D0

text

#090511

muted

#7B7980

Preview Lab

Preview with #28288E

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

Preview Lab → · Contrast checker → · Palette generator →