#28428C#28428C

#28428C is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.3% C 0.127 H 266.2°. Best body text is #FFFFFF at 9.34:1 contrast (WCAG AA passes).

Color values

HEX	#28428C
RGB	rgb(40, 66, 140)
HSL	hsl(224, 56%, 35%)
HSV	hsv(224, 71%, 55%)
CMYK	cmyk(71.4%, 52.9%, 0%, 45.1%)
CIE-LAB	lab(30.01, 16.66, -44.13)
CIE-LCH	lch(30.01, 47.17, 290.69°)
OKLab	oklab(40.27% -0.0084 -0.1268)
OKLCH	oklch(40.27% 0.127 266.2)
XYZ	xyz(7.5553, 6.2402, 25.6122)
Luminance	0.0624 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28428C #8C7228

analogous

#28748C #28428C #40288C

triadic

#28428C #8C2842 #428C28

tetradic

#28428C #8C2874 #8C7228 #288C40

square

#28428C #8C2874 #8C7228 #288C40

split-complementary

#28428C #8C4028 #748C28

monochromatic

#0D152D #1A2C5C #28428C #3658BC #5E7CD1

Accessibility & contrast

On white

9.34

#28428C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#28428C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28428C

9.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28428C	#FFFFFF	#000000	##FFFFFF
##28428C	1.00	9.34	2.25	9.34
#FFFFFF	9.34	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#144B8F

Deuteranopia (green-blind)

#00428B

Tritanopia (blue-blind)

#005460

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #28428c;
/* rgb */ color: rgb(40, 66, 140);
/* oklch */ color: oklch(40.3% 0.127 266.2);

Tailwind

colors: {
  custom: {
    50: '#6f75ae',
    500: '#28428c',
    950: '#000000',
  },
}

SCSS

$custom: #28428c;
$custom-light: #6f75ae;
$custom-dark: #000000;

JSON

{
  "hex": "#28428c",
  "rgb": {
    "r": 40,
    "g": 66,
    "b": 140
  },
  "hsl": {
    "h": 224.4,
    "s": 55.556,
    "l": 35.294
  },
  "oklch": {
    "l": 0.40265,
    "c": 0.12708,
    "h": 266.2
  },
  "luminance": 0.06241
}

Semantic roles & 50–950 ramp

primary

#28428C

secondary

#B69E5A

accent

#B849DF

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #28428C

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

Preview Lab → · Contrast checker → · Palette generator →