#28388D#28388D

#28388D is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.3% C 0.142 H 270.2°. Best body text is #FFFFFF at 10.29:1 contrast (WCAG AA passes).

Color values

HEX	#28388D
RGB	rgb(40, 56, 141)
HSL	hsl(230, 56%, 35%)
HSV	hsv(230, 72%, 55%)
CMYK	cmyk(71.6%, 60.3%, 0%, 44.7%)
CIE-LAB	lab(27.30, 23.88, -49.14)
CIE-LCH	lch(27.30, 54.64, 295.92°)
OKLab	oklab(38.25% 0.0004 -0.1417)
OKLCH	oklch(38.25% 0.142 270.2)
XYZ	xyz(7.0953, 5.2019, 25.8243)
Luminance	0.0520 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28388D #8D7D28

analogous

#286A8D #28388D #4A288D

triadic

#28388D #8D2838 #388D28

tetradic

#28388D #8D286A #8D7D28 #288D4A

square

#28388D #8D286A #8D7D28 #288D4A

split-complementary

#28388D #8D4A28 #6A8D28

monochromatic

#0D122E #1A255D #28388D #364BBD #5E70D1

Accessibility & contrast

On white

10.29

#28388D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#28388D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28388D

10.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28388D	#FFFFFF	#000000	##FFFFFF
##28388D	1.00	10.29	2.04	10.29
#FFFFFF	10.29	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004590

Deuteranopia (green-blind)

#003C8B

Tritanopia (blue-blind)

#004D5D

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #28388d;
/* rgb */ color: rgb(40, 56, 141);
/* oklch */ color: oklch(38.3% 0.142 270.2);

Tailwind

colors: {
  custom: {
    50: '#706eaf',
    500: '#28388d',
    950: '#000000',
  },
}

SCSS

$custom: #28388d;
$custom-light: #706eaf;
$custom-dark: #000000;

JSON

{
  "hex": "#28388d",
  "rgb": {
    "r": 40,
    "g": 56,
    "b": 141
  },
  "hsl": {
    "h": 230.495,
    "s": 55.801,
    "l": 35.49
  },
  "oklch": {
    "l": 0.38253,
    "c": 0.14168,
    "h": 270.2
  },
  "luminance": 0.05203
}

Semantic roles & 50–950 ramp

primary

#28388D

secondary

#B7A85A

accent

#C749DF

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #28388D

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

Preview Lab → · Contrast checker → · Palette generator →