#28428E#28428E

#28428E is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.4% C 0.130 H 266.4°. Best body text is #FFFFFF at 9.29:1 contrast (WCAG AA passes).

Color values

HEX	#28428E
RGB	rgb(40, 66, 142)
HSL	hsl(225, 56%, 36%)
HSV	hsv(225, 72%, 56%)
CMYK	cmyk(71.8%, 53.5%, 0%, 44.3%)
CIE-LAB	lab(30.16, 17.44, -45.13)
CIE-LCH	lch(30.16, 48.38, 291.13°)
OKLab	oklab(40.42% -0.0082 -0.1297)
OKLCH	oklch(40.42% 0.13 266.4)
XYZ	xyz(7.7041, 6.2998, 26.3959)
Luminance	0.0630 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28428E #8E7428

analogous

#28758E #28428E #41288E

triadic

#28428E #8E2842 #428E28

tetradic

#28428E #8E2875 #8E7428 #288E41

square

#28428E #8E2875 #8E7428 #288E41

split-complementary

#28428E #8E4128 #758E28

monochromatic

#0D162F #1B2C5E #28428E #3558BE #5F7CD2

Accessibility & contrast

On white

9.29

#28428E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#28428E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28428E

9.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28428E	#FFFFFF	#000000	##FFFFFF
##28428E	1.00	9.29	2.26	9.29
#FFFFFF	9.29	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#104C91

Deuteranopia (green-blind)

#00438C

Tritanopia (blue-blind)

#005461

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #28428e;
/* rgb */ color: rgb(40, 66, 142);
/* oklch */ color: oklch(40.4% 0.130 266.4);

Tailwind

colors: {
  custom: {
    50: '#7075b0',
    500: '#28428e',
    950: '#000000',
  },
}

SCSS

$custom: #28428e;
$custom-light: #7075b0;
$custom-dark: #000000;

JSON

{
  "hex": "#28428e",
  "rgb": {
    "r": 40,
    "g": 66,
    "b": 142
  },
  "hsl": {
    "h": 224.706,
    "s": 56.044,
    "l": 35.686
  },
  "oklch": {
    "l": 0.40422,
    "c": 0.12999,
    "h": 266.4
  },
  "luminance": 0.06301
}

Semantic roles & 50–950 ramp

primary

#28428E

secondary

#B7A05B

accent

#B948DF

background

#F7F7FA

surface

#EDEDF5

border

#C8C8CF

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #28428E

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

Preview Lab → · Contrast checker → · Palette generator →