#28409E#28409E

#28409E is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.3% C 0.155 H 267.9°. Best body text is #FFFFFF at 9.06:1 contrast (WCAG AA passes).

Color values

HEX	#28409E
RGB	rgb(40, 64, 158)
HSL	hsl(228, 60%, 39%)
HSV	hsv(228, 75%, 62%)
CMYK	cmyk(74.7%, 59.5%, 0%, 38%)
CIE-LAB	lab(30.84, 24.95, -53.77)
CIE-LCH	lch(30.84, 59.28, 294.89°)
OKLab	oklab(41.33% -0.0056 -0.1552)
OKLCH	oklch(41.33% 0.155 267.9)
XYZ	xyz(8.8779, 6.5856, 33.1444)
Luminance	0.0659 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28409E #9E8628

analogous

#287B9E #28409E #4B289E

triadic

#28409E #9E2840 #409E28

tetradic

#28409E #9E287B #9E8628 #289E4B

square

#28409E #9E287B #9E8628 #289E4B

split-complementary

#28409E #9E4B28 #7B9E28

monochromatic

#0F183C #1C2C6D #28409E #3755CC #687FD9

Accessibility & contrast

On white

9.06

#28409E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#28409E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28409E

9.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28409E	#FFFFFF	#000000	##FFFFFF
##28409E	1.00	9.06	2.32	9.06
#FFFFFF	9.06	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA1

Deuteranopia (green-blind)

#00439C

Tritanopia (blue-blind)

#005868

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #28409e;
/* rgb */ color: rgb(40, 64, 158);
/* oklch */ color: oklch(41.3% 0.155 267.9);

Tailwind

colors: {
  custom: {
    50: '#7374bb',
    500: '#28409e',
    950: '#000000',
  },
}

SCSS

$custom: #28409e;
$custom-light: #7374bb;
$custom-dark: #000000;

JSON

{
  "hex": "#28409e",
  "rgb": {
    "r": 40,
    "g": 64,
    "b": 158
  },
  "hsl": {
    "h": 227.797,
    "s": 59.596,
    "l": 38.824
  },
  "oklch": {
    "l": 0.4133,
    "c": 0.15528,
    "h": 267.9
  },
  "luminance": 0.06587
}

Semantic roles & 50–950 ramp

primary

#28409E

secondary

#BFAC63

accent

#C345E3

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #28409E

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

Preview Lab → · Contrast checker → · Palette generator →