#28307A#28307A

#28307A is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.0% C 0.125 H 273.4°. Best body text is #FFFFFF at 11.71:1 contrast (WCAG AA passes).

Color values

HEX	#28307A
RGB	rgb(40, 48, 122)
HSL	hsl(234, 51%, 32%)
HSV	hsv(234, 67%, 48%)
CMYK	cmyk(67.2%, 60.7%, 0%, 52.2%)
CIE-LAB	lab(23.57, 22.17, -43.32)
CIE-LCH	lch(23.57, 48.66, 297.10°)
OKLab	oklab(34.99% 0.0074 -0.1247)
OKLCH	oklch(34.99% 0.125 273.4)
XYZ	xyz(5.4437, 3.9697, 18.8879)
Luminance	0.0397 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28307A #7A7228

analogous

#28597A #28307A #49287A

triadic

#28307A #7A2830 #307A28

tetradic

#28307A #7A2859 #7A7228 #287A49

square

#28307A #7A2859 #7A7228 #287A49

split-complementary

#28307A #7A4928 #597A28

monochromatic

#0A0C1E #191E4C #28307A #3742A8 #5560C7

Accessibility & contrast

On white

11.71

#28307A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#28307A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28307A

11.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28307A	#FFFFFF	#000000	##FFFFFF
##28307A	1.00	11.71	1.79	11.71
#FFFFFF	11.71	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C7C

Deuteranopia (green-blind)

#003579

Tritanopia (blue-blind)

#004250

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #28307a;
/* rgb */ color: rgb(40, 48, 122);
/* oklch */ color: oklch(35.0% 0.125 273.4);

Tailwind

colors: {
  custom: {
    50: '#6c68a1',
    500: '#28307a',
    950: '#000000',
  },
}

SCSS

$custom: #28307a;
$custom-light: #6c68a1;
$custom-dark: #000000;

JSON

{
  "hex": "#28307a",
  "rgb": {
    "r": 40,
    "g": 48,
    "b": 122
  },
  "hsl": {
    "h": 234.146,
    "s": 50.617,
    "l": 31.765
  },
  "oklch": {
    "l": 0.34987,
    "c": 0.12488,
    "h": 273.4
  },
  "luminance": 0.0397
}

Semantic roles & 50–950 ramp

primary

#28307A

secondary

#ACA352

accent

#CC4EDA

background

#F6F6FA

surface

#ECEBF3

border

#C7C6CD

text

#08060F

muted

#7A7A7F

Preview Lab

Preview with #28307A

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

Preview Lab → · Contrast checker → · Palette generator →