#28338A#28338A

#28338A is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.0% C 0.144 H 271.8°. Best body text is #FFFFFF at 10.88:1 contrast (WCAG AA passes).

Color values

HEX	#28338A
RGB	rgb(40, 51, 138)
HSL	hsl(233, 55%, 35%)
HSV	hsv(233, 71%, 54%)
CMYK	cmyk(71%, 63%, 0%, 45.9%)
CIE-LAB	lab(25.72, 26.14, -49.86)
CIE-LCH	lch(25.72, 56.29, 297.67°)
OKLab	oklab(37% 0.0045 -0.1438)
OKLCH	oklch(37% 0.144 271.8)
XYZ	xyz(6.6448, 4.6531, 24.5878)
Luminance	0.0465 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28338A #8A7F28

analogous

#28648A #28338A #4E288A

triadic

#28338A #8A2833 #338A28

tetradic

#28338A #8A2864 #8A7F28 #288A4E

square

#28338A #8A2864 #8A7F28 #288A4E

split-complementary

#28338A #8A4E28 #648A28

monochromatic

#0C102B #1A215B #28338A #3645B9 #5D69D0

Accessibility & contrast

On white

10.88

#28338A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#28338A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28338A

10.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28338A	#FFFFFF	#000000	##FFFFFF
##28338A	1.00	10.88	1.93	10.88
#FFFFFF	10.88	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00428D

Deuteranopia (green-blind)

#003988

Tritanopia (blue-blind)

#004959

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #28338a;
/* rgb */ color: rgb(40, 51, 138);
/* oklch */ color: oklch(37.0% 0.144 271.8);

Tailwind

colors: {
  custom: {
    50: '#706aad',
    500: '#28338a',
    950: '#000000',
  },
}

SCSS

$custom: #28338a;
$custom-light: #706aad;
$custom-dark: #000000;

JSON

{
  "hex": "#28338a",
  "rgb": {
    "r": 40,
    "g": 51,
    "b": 138
  },
  "hsl": {
    "h": 233.265,
    "s": 55.056,
    "l": 34.902
  },
  "oklch": {
    "l": 0.37003,
    "c": 0.14391,
    "h": 271.8
  },
  "luminance": 0.04654
}

Semantic roles & 50–950 ramp

primary

#28338A

secondary

#B5AB59

accent

#CE49DE

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #28338A

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

Preview Lab → · Contrast checker → · Palette generator →