#28307C#28307C

#28307C is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.2% C 0.128 H 273.3°. Best body text is #FFFFFF at 11.64:1 contrast (WCAG AA passes).

Color values

HEX	#28307C
RGB	rgb(40, 48, 124)
HSL	hsl(234, 51%, 32%)
HSV	hsv(234, 68%, 49%)
CMYK	cmyk(67.7%, 61.3%, 0%, 51.4%)
CIE-LAB	lab(23.74, 22.92, -44.31)
CIE-LCH	lch(23.74, 49.89, 297.35°)
OKLab	oklab(35.16% 0.0074 -0.1276)
OKLCH	oklch(35.16% 0.128 273.3)
XYZ	xyz(5.5689, 4.0198, 19.5473)
Luminance	0.0402 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28307C #7C7428

analogous

#285A7C #28307C #4A287C

triadic

#28307C #7C2830 #307C28

tetradic

#28307C #7C285A #7C7428 #287C4A

square

#28307C #7C285A #7C7428 #287C4A

split-complementary

#28307C #7C4A28 #5A7C28

monochromatic

#0A0C1F #191E4E #28307C #3742AA #5661C8

Accessibility & contrast

On white

11.64

#28307C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#28307C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28307C

11.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28307C	#FFFFFF	#000000	##FFFFFF
##28307C	1.00	11.64	1.80	11.64
#FFFFFF	11.64	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C7F

Deuteranopia (green-blind)

#00357A

Tritanopia (blue-blind)

#004351

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #28307c;
/* rgb */ color: rgb(40, 48, 124);
/* oklch */ color: oklch(35.2% 0.128 273.3);

Tailwind

colors: {
  custom: {
    50: '#6d68a3',
    500: '#28307c',
    950: '#000000',
  },
}

SCSS

$custom: #28307c;
$custom-light: #6d68a3;
$custom-dark: #000000;

JSON

{
  "hex": "#28307c",
  "rgb": {
    "r": 40,
    "g": 48,
    "b": 124
  },
  "hsl": {
    "h": 234.286,
    "s": 51.22,
    "l": 32.157
  },
  "oklch": {
    "l": 0.35162,
    "c": 0.1278,
    "h": 273.3
  },
  "luminance": 0.0402
}

Semantic roles & 50–950 ramp

primary

#28307C

secondary

#ADA552

accent

#CD4DDB

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#08060F

muted

#7A7A7F

Preview Lab

Preview with #28307C

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

Preview Lab → · Contrast checker → · Palette generator →