#28288C#28288C

#28288C is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.2% C 0.160 H 274.4°. Best body text is #FFFFFF at 11.85:1 contrast (WCAG AA passes).

Color values

HEX	#28288C
RGB	rgb(40, 40, 140)
HSL	hsl(240, 56%, 35%)
HSV	hsv(240, 71%, 55%)
CMYK	cmyk(71.4%, 71.4%, 0%, 45.1%)
CIE-LAB	lab(23.21, 34.05, -55.22)
CIE-LCH	lch(23.21, 64.87, 301.66°)
OKLab	oklab(35.23% 0.0124 -0.1596)
OKLCH	oklch(35.23% 0.16 274.4)
XYZ	xyz(6.3659, 3.8615, 25.2157)
Luminance	0.0386 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28288C #8C8C28

analogous

#285A8C #28288C #5A288C

triadic

#28288C #8C2828 #288C28

tetradic

#28288C #8C285A #8C8C28 #288C5A

square

#28288C #8C285A #8C8C28 #288C5A

split-complementary

#28288C #8C5A28 #5A8C28

monochromatic

#0D0D2D #1A1A5C #28288C #3636BC #5E5ED1

Accessibility & contrast

On white

11.85

#28288C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#28288C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28288C

11.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28288C	#FFFFFF	#000000	##FFFFFF
##28288C	1.00	11.85	1.77	11.85
#FFFFFF	11.85	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C8F

Deuteranopia (green-blind)

#00338A

Tritanopia (blue-blind)

#004357

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #28288c;
/* rgb */ color: rgb(40, 40, 140);
/* oklch */ color: oklch(35.2% 0.160 274.4);

Tailwind

colors: {
  custom: {
    50: '#7163af',
    500: '#28288c',
    950: '#000000',
  },
}

SCSS

$custom: #28288c;
$custom-light: #7163af;
$custom-dark: #000000;

JSON

{
  "hex": "#28288c",
  "rgb": {
    "r": 40,
    "g": 40,
    "b": 140
  },
  "hsl": {
    "h": 240,
    "s": 55.556,
    "l": 35.294
  },
  "oklch": {
    "l": 0.35227,
    "c": 0.16007,
    "h": 274.4
  },
  "luminance": 0.03862
}

Semantic roles & 50–950 ramp

primary

#28288C

secondary

#B6B65A

accent

#DF49DF

background

#F7F5FA

surface

#EDEAF5

border

#C8C6CF

text

#090510

muted

#7B797F

Preview Lab

Preview with #28288C

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

Preview Lab → · Contrast checker → · Palette generator →