#28388C#28388C

#28388C is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.2% C 0.140 H 270.2°. Best body text is #FFFFFF at 10.32:1 contrast (WCAG AA passes).

Color values

HEX	#28388C
RGB	rgb(40, 56, 140)
HSL	hsl(230, 56%, 35%)
HSV	hsv(230, 71%, 55%)
CMYK	cmyk(71.4%, 60%, 0%, 45.1%)
CIE-LAB	lab(27.22, 23.50, -48.66)
CIE-LCH	lch(27.22, 54.04, 295.78°)
OKLab	oklab(38.17% 0.0004 -0.1403)
OKLCH	oklch(38.17% 0.14 270.2)
XYZ	xyz(7.0213, 5.1722, 25.4342)
Luminance	0.0517 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28388C #8C7C28

analogous

#286A8C #28388C #4A288C

triadic

#28388C #8C2838 #388C28

tetradic

#28388C #8C286A #8C7C28 #288C4A

square

#28388C #8C286A #8C7C28 #288C4A

split-complementary

#28388C #8C4A28 #6A8C28

monochromatic

#0D122D #1A255C #28388C #364BBC #5E70D1

Accessibility & contrast

On white

10.32

#28388C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#28388C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28388C

10.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28388C	#FFFFFF	#000000	##FFFFFF
##28388C	1.00	10.32	2.03	10.32
#FFFFFF	10.32	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458F

Deuteranopia (green-blind)

#003C8A

Tritanopia (blue-blind)

#004D5C

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #28388c;
/* rgb */ color: rgb(40, 56, 140);
/* oklch */ color: oklch(38.2% 0.140 270.2);

Tailwind

colors: {
  custom: {
    50: '#706eae',
    500: '#28388c',
    950: '#000000',
  },
}

SCSS

$custom: #28388c;
$custom-light: #706eae;
$custom-dark: #000000;

JSON

{
  "hex": "#28388c",
  "rgb": {
    "r": 40,
    "g": 56,
    "b": 140
  },
  "hsl": {
    "h": 230.4,
    "s": 55.556,
    "l": 35.294
  },
  "oklch": {
    "l": 0.38166,
    "c": 0.14026,
    "h": 270.2
  },
  "luminance": 0.05173
}

Semantic roles & 50–950 ramp

primary

#28388C

secondary

#B6A75A

accent

#C749DF

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #28388C

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

Preview Lab → · Contrast checker → · Palette generator →