#28338B#28338B

#28338B is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.1% C 0.145 H 271.8°. Best body text is #FFFFFF at 10.84:1 contrast (WCAG AA passes).

Color values

HEX	#28338B
RGB	rgb(40, 51, 139)
HSL	hsl(233, 55%, 35%)
HSV	hsv(233, 71%, 55%)
CMYK	cmyk(71.2%, 63.3%, 0%, 45.5%)
CIE-LAB	lab(25.81, 26.51, -50.34)
CIE-LCH	lch(25.81, 56.89, 297.78°)
OKLab	oklab(37.09% 0.0045 -0.1452)
OKLCH	oklch(37.09% 0.145 271.8)
XYZ	xyz(6.7175, 4.6822, 24.9708)
Luminance	0.0468 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28338B #8B8028

analogous

#28658B #28338B #4E288B

triadic

#28338B #8B2833 #338B28

tetradic

#28338B #8B2865 #8B8028 #288B4E

square

#28338B #8B2865 #8B8028 #288B4E

split-complementary

#28338B #8B4E28 #658B28

monochromatic

#0D102C #1A225B #28338B #3644BB #5D6AD0

Accessibility & contrast

On white

10.84

#28338B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#28338B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28338B

10.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28338B	#FFFFFF	#000000	##FFFFFF
##28338B	1.00	10.84	1.94	10.84
#FFFFFF	10.84	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00428E

Deuteranopia (green-blind)

#003989

Tritanopia (blue-blind)

#00495A

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #28338b;
/* rgb */ color: rgb(40, 51, 139);
/* oklch */ color: oklch(37.1% 0.145 271.8);

Tailwind

colors: {
  custom: {
    50: '#706aae',
    500: '#28338b',
    950: '#000000',
  },
}

SCSS

$custom: #28338b;
$custom-light: #706aae;
$custom-dark: #000000;

JSON

{
  "hex": "#28338b",
  "rgb": {
    "r": 40,
    "g": 51,
    "b": 139
  },
  "hsl": {
    "h": 233.333,
    "s": 55.307,
    "l": 35.098
  },
  "oklch": {
    "l": 0.37094,
    "c": 0.14531,
    "h": 271.8
  },
  "luminance": 0.04683
}

Semantic roles & 50–950 ramp

primary

#28338B

secondary

#B6AB59

accent

#CE49DF

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #28338B

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

Preview Lab → · Contrast checker → · Palette generator →