#28388A#28388A

#28388A is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.0% C 0.137 H 270.2°. Best body text is #FFFFFF at 10.38:1 contrast (WCAG AA passes).

Color values

HEX	#28388A
RGB	rgb(40, 56, 138)
HSL	hsl(230, 55%, 35%)
HSV	hsv(230, 71%, 54%)
CMYK	cmyk(71%, 59.4%, 0%, 45.9%)
CIE-LAB	lab(27.06, 22.74, -47.68)
CIE-LCH	lch(27.06, 52.83, 295.50°)
OKLab	oklab(37.99% 0.0004 -0.1374)
OKLCH	oklch(37.99% 0.137 270.2)
XYZ	xyz(6.8751, 5.1138, 24.6646)
Luminance	0.0511 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28388A #8A7A28

analogous

#28698A #28388A #49288A

triadic

#28388A #8A2838 #388A28

tetradic

#28388A #8A2869 #8A7A28 #288A49

square

#28388A #8A2869 #8A7A28 #288A49

split-complementary

#28388A #8A4928 #698A28

monochromatic

#0C112B #1A255B #28388A #364BB9 #5D6FD0

Accessibility & contrast

On white

10.38

#28388A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#28388A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28388A

10.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28388A	#FFFFFF	#000000	##FFFFFF
##28388A	1.00	10.38	2.02	10.38
#FFFFFF	10.38	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458D

Deuteranopia (green-blind)

#003C88

Tritanopia (blue-blind)

#004C5B

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #28388a;
/* rgb */ color: rgb(40, 56, 138);
/* oklch */ color: oklch(38.0% 0.137 270.2);

Tailwind

colors: {
  custom: {
    50: '#6f6ead',
    500: '#28388a',
    950: '#000000',
  },
}

SCSS

$custom: #28388a;
$custom-light: #6f6ead;
$custom-dark: #000000;

JSON

{
  "hex": "#28388a",
  "rgb": {
    "r": 40,
    "g": 56,
    "b": 138
  },
  "hsl": {
    "h": 230.204,
    "s": 55.056,
    "l": 34.902
  },
  "oklch": {
    "l": 0.37993,
    "c": 0.1374,
    "h": 270.2
  },
  "luminance": 0.05114
}

Semantic roles & 50–950 ramp

primary

#28388A

secondary

#B5A659

accent

#C649DE

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #28388A

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

Preview Lab → · Contrast checker → · Palette generator →