#28189F#28189F

#28189F is a dark, vivid blue. Relative luminance 0.036; OKLCH L 35.2% C 0.198 H 274.5°. Best body text is #FFFFFF at 12.20:1 contrast (WCAG AA passes).

Color values

HEX	#28189F
RGB	rgb(40, 24, 159)
HSL	hsl(247, 74%, 36%)
HSV	hsv(247, 85%, 62%)
CMYK	cmyk(74.8%, 84.9%, 0%, 37.6%)
CIE-LAB	lab(22.33, 48.85, -68.39)
CIE-LCH	lch(22.33, 84.05, 305.54°)
OKLab	oklab(35.23% 0.0155 -0.1977)
OKLCH	oklch(35.23% 0.198 274.5)
XYZ	xyz(7.4576, 3.6068, 33.0973)
Luminance	0.0361 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28189F #8F9F18

analogous

#184B9F #28189F #6B189F

triadic

#28189F #9F2818 #189F28

tetradic

#28189F #9F184B #8F9F18 #189F6B

square

#28189F #9F184B #8F9F18 #189F6B

split-complementary

#28189F #9F6B18 #4B9F18

monochromatic

#0D0835 #1B106A #28189F #3520D4 #5F4DE4

Accessibility & contrast

On white

12.20

#28189F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#28189F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28189F

12.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28189F	#FFFFFF	#000000	##FFFFFF
##28189F	1.00	12.20	1.72	12.20
#FFFFFF	12.20	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003BA3

Deuteranopia (green-blind)

#002F9D

Tritanopia (blue-blind)

#00445E

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #28189f;
/* rgb */ color: rgb(40, 24, 159);
/* oklch */ color: oklch(35.2% 0.198 274.5);

Tailwind

colors: {
  custom: {
    50: '#775abd',
    500: '#28189f',
    950: '#000000',
  },
}

SCSS

$custom: #28189f;
$custom-light: #775abd;
$custom-dark: #000000;

JSON

{
  "hex": "#28189f",
  "rgb": {
    "r": 40,
    "g": 24,
    "b": 159
  },
  "hsl": {
    "h": 247.111,
    "s": 73.77,
    "l": 35.882
  },
  "oklch": {
    "l": 0.3523,
    "c": 0.19833,
    "h": 274.5
  },
  "luminance": 0.03608
}

Semantic roles & 50–950 ramp

primary

#28189F

secondary

#B8C64D

accent

#F037DA

background

#F8F5FB

surface

#EFE9F7

border

#CAC5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #28189F

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

Preview Lab → · Contrast checker → · Palette generator →