#28388E#28388E

#28388E is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.3% C 0.143 H 270.2°. Best body text is #FFFFFF at 10.26:1 contrast (WCAG AA passes).

Color values

HEX	#28388E
RGB	rgb(40, 56, 142)
HSL	hsl(231, 56%, 36%)
HSV	hsv(231, 72%, 56%)
CMYK	cmyk(71.8%, 60.6%, 0%, 44.3%)
CIE-LAB	lab(27.38, 24.26, -49.62)
CIE-LCH	lch(27.38, 55.24, 296.06°)
OKLab	oklab(38.34% 0.0004 -0.1431)
OKLCH	oklch(38.34% 0.143 270.2)
XYZ	xyz(7.1701, 5.2317, 26.2179)
Luminance	0.0523 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28388E #8E7E28

analogous

#286B8E #28388E #4B288E

triadic

#28388E #8E2838 #388E28

tetradic

#28388E #8E286B #8E7E28 #288E4B

square

#28388E #8E286B #8E7E28 #288E4B

split-complementary

#28388E #8E4B28 #6B8E28

monochromatic

#0D122F #1B255E #28388E #354BBE #5F71D2

Accessibility & contrast

On white

10.26

#28388E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#28388E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28388E

10.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28388E	#FFFFFF	#000000	##FFFFFF
##28388E	1.00	10.26	2.05	10.26
#FFFFFF	10.26	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004591

Deuteranopia (green-blind)

#003C8C

Tritanopia (blue-blind)

#004D5D

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #28388e;
/* rgb */ color: rgb(40, 56, 142);
/* oklch */ color: oklch(38.3% 0.143 270.2);

Tailwind

colors: {
  custom: {
    50: '#706eb0',
    500: '#28388e',
    950: '#000000',
  },
}

SCSS

$custom: #28388e;
$custom-light: #706eb0;
$custom-dark: #000000;

JSON

{
  "hex": "#28388e",
  "rgb": {
    "r": 40,
    "g": 56,
    "b": 142
  },
  "hsl": {
    "h": 230.588,
    "s": 56.044,
    "l": 35.686
  },
  "oklch": {
    "l": 0.38341,
    "c": 0.1431,
    "h": 270.2
  },
  "luminance": 0.05232
}

Semantic roles & 50–950 ramp

primary

#28388E

secondary

#B7A95B

accent

#C848DF

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #28388E

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

Preview Lab → · Contrast checker → · Palette generator →