#28189B#28189B

#28189B is a dark, vivid blue. Relative luminance 0.035; OKLCH L 34.8% C 0.194 H 274.9°. Best body text is #FFFFFF at 12.40:1 contrast (WCAG AA passes).

Color values

HEX	#28189B
RGB	rgb(40, 24, 155)
HSL	hsl(247, 73%, 35%)
HSV	hsv(247, 85%, 61%)
CMYK	cmyk(74.2%, 84.5%, 0%, 39.2%)
CIE-LAB	lab(21.84, 47.65, -66.76)
CIE-LCH	lch(21.84, 82.02, 305.52°)
OKLab	oklab(34.75% 0.0166 -0.193)
OKLCH	oklch(34.75% 0.194 274.9)
XYZ	xyz(7.1161, 3.4702, 31.2988)
Luminance	0.0347 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28189B #8B9B18

analogous

#184A9B #28189B #69189B

triadic

#28189B #9B2818 #189B28

tetradic

#28189B #9B184A #8B9B18 #189B69

square

#28189B #9B184A #8B9B18 #189B69

split-complementary

#28189B #9B6918 #4A9B18

monochromatic

#0D0831 #1A1066 #28189B #3620D0 #5D4AE3

Accessibility & contrast

On white

12.40

#28189B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#28189B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28189B

12.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28189B	#FFFFFF	#000000	##FFFFFF
##28189B	1.00	12.40	1.69	12.40
#FFFFFF	12.40	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A9E

Deuteranopia (green-blind)

#002E99

Tritanopia (blue-blind)

#00425C

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #28189b;
/* rgb */ color: rgb(40, 24, 155);
/* oklch */ color: oklch(34.8% 0.194 274.9);

Tailwind

colors: {
  custom: {
    50: '#765aba',
    500: '#28189b',
    950: '#000000',
  },
}

SCSS

$custom: #28189b;
$custom-light: #765aba;
$custom-dark: #000000;

JSON

{
  "hex": "#28189b",
  "rgb": {
    "r": 40,
    "g": 24,
    "b": 155
  },
  "hsl": {
    "h": 247.328,
    "s": 73.184,
    "l": 35.098
  },
  "oklch": {
    "l": 0.34752,
    "c": 0.19371,
    "h": 274.9
  },
  "luminance": 0.03471
}

Semantic roles & 50–950 ramp

primary

#28189B

secondary

#B6C54A

accent

#F038D9

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #28189B

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

Preview Lab → · Contrast checker → · Palette generator →