#28399F#28399F

#28399F is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.1% C 0.165 H 269.8°. Best body text is #FFFFFF at 9.65:1 contrast (WCAG AA passes).

Color values

HEX	#28399F
RGB	rgb(40, 57, 159)
HSL	hsl(231, 60%, 39%)
HSV	hsv(231, 75%, 62%)
CMYK	cmyk(74.8%, 64.2%, 0%, 37.6%)
CIE-LAB	lab(29.11, 29.99, -57.22)
CIE-LCH	lch(29.11, 64.60, 297.66°)
OKLab	oklab(40.07% -0.0006 -0.1654)
OKLCH	oklch(40.07% 0.165 269.8)
XYZ	xyz(8.5941, 5.8797, 33.4761)
Luminance	0.0588 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28399F #9F8E28

analogous

#28759F #28399F #53289F

triadic

#28399F #9F2839 #399F28

tetradic

#28399F #9F2875 #9F8E28 #289F53

square

#28399F #9F2875 #9F8E28 #289F53

split-complementary

#28399F #9F5328 #759F28

monochromatic

#0F163D #1C276E #28399F #374DCD #6878D9

Accessibility & contrast

On white

9.65

#28399F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#28399F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28399F

9.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28399F	#FFFFFF	#000000	##FFFFFF
##28399F	1.00	9.65	2.18	9.65
#FFFFFF	9.65	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AA2

Deuteranopia (green-blind)

#003F9D

Tritanopia (blue-blind)

#005466

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #28399f;
/* rgb */ color: rgb(40, 57, 159);
/* oklch */ color: oklch(40.1% 0.165 269.8);

Tailwind

colors: {
  custom: {
    50: '#746fbc',
    500: '#28399f',
    950: '#000000',
  },
}

SCSS

$custom: #28399f;
$custom-light: #746fbc;
$custom-dark: #000000;

JSON

{
  "hex": "#28399f",
  "rgb": {
    "r": 40,
    "g": 57,
    "b": 159
  },
  "hsl": {
    "h": 231.429,
    "s": 59.799,
    "l": 39.02
  },
  "oklch": {
    "l": 0.40068,
    "c": 0.16536,
    "h": 269.8
  },
  "luminance": 0.05881
}

Semantic roles & 50–950 ramp

primary

#28399F

secondary

#BFB264

accent

#CC45E3

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #28399F

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

Preview Lab → · Contrast checker → · Palette generator →