#28288F#28288F

#28288F is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.5% C 0.164 H 274.2°. Best body text is #FFFFFF at 11.73:1 contrast (WCAG AA passes).

Color values

HEX	#28288F
RGB	rgb(40, 40, 143)
HSL	hsl(240, 56%, 36%)
HSV	hsv(240, 72%, 56%)
CMYK	cmyk(72%, 72%, 0%, 43.9%)
CIE-LAB	lab(23.51, 35.11, -56.59)
CIE-LCH	lch(23.51, 66.60, 301.82°)
OKLab	oklab(35.53% 0.012 -0.1636)
OKLCH	oklch(35.53% 0.164 274.2)
XYZ	xyz(6.5901, 3.9512, 26.3966)
Luminance	0.0395 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28288F #8F8F28

analogous

#285B8F #28288F #5B288F

triadic

#28288F #8F2828 #288F28

tetradic

#28288F #8F285B #8F8F28 #288F5B

square

#28288F #8F285B #8F8F28 #288F5B

split-complementary

#28288F #8F5B28 #5B8F28

monochromatic

#0D0D2F #1B1B5F #28288F #3535BF #5F5FD2

Accessibility & contrast

On white

11.73

#28288F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#28288F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28288F

11.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28288F	#FFFFFF	#000000	##FFFFFF
##28288F	1.00	11.73	1.79	11.73
#FFFFFF	11.73	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D92

Deuteranopia (green-blind)

#00338D

Tritanopia (blue-blind)

#004458

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #28288f;
/* rgb */ color: rgb(40, 40, 143);
/* oklch */ color: oklch(35.5% 0.164 274.2);

Tailwind

colors: {
  custom: {
    50: '#7263b1',
    500: '#28288f',
    950: '#000000',
  },
}

SCSS

$custom: #28288f;
$custom-light: #7263b1;
$custom-dark: #000000;

JSON

{
  "hex": "#28288f",
  "rgb": {
    "r": 40,
    "g": 40,
    "b": 143
  },
  "hsl": {
    "h": 240,
    "s": 56.284,
    "l": 35.882
  },
  "oklch": {
    "l": 0.35535,
    "c": 0.16403,
    "h": 274.2
  },
  "luminance": 0.03952
}

Semantic roles & 50–950 ramp

primary

#28288F

secondary

#B8B85B

accent

#E048E0

background

#F7F5FB

surface

#EDEAF6

border

#C8C6D0

text

#090511

muted

#7B7980

Preview Lab

Preview with #28288F

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

Preview Lab → · Contrast checker → · Palette generator →