#28359B#28359B

#28359B is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.0% C 0.165 H 270.8°. Best body text is #FFFFFF at 10.13:1 contrast (WCAG AA passes).

Color values

HEX	#28359B
RGB	rgb(40, 53, 155)
HSL	hsl(233, 59%, 38%)
HSV	hsv(233, 74%, 61%)
CMYK	cmyk(74.2%, 65.8%, 0%, 39.2%)
CIE-LAB	lab(27.74, 31.14, -57.01)
CIE-LCH	lch(27.74, 64.96, 298.64°)
OKLab	oklab(38.96% 0.0023 -0.1648)
OKLCH	oklch(38.96% 0.165 270.8)
XYZ	xyz(8.0626, 5.3630, 31.6143)
Luminance	0.0536 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28359B #9B8E28

analogous

#286E9B #28359B #54289B

triadic

#28359B #9B2835 #359B28

tetradic

#28359B #9B286E #9B8E28 #289B54

square

#28359B #9B286E #9B8E28 #289B54

split-complementary

#28359B #9B5428 #6E9B28

monochromatic

#0F143A #1B246A #28359B #3546CB #6673D7

Accessibility & contrast

On white

10.13

#28359B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#28359B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28359B

10.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28359B	#FFFFFF	#000000	##FFFFFF
##28359B	1.00	10.13	2.07	10.13
#FFFFFF	10.13	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00479E

Deuteranopia (green-blind)

#003C99

Tritanopia (blue-blind)

#005063

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #28359b;
/* rgb */ color: rgb(40, 53, 155);
/* oklch */ color: oklch(39.0% 0.165 270.8);

Tailwind

colors: {
  custom: {
    50: '#746cb9',
    500: '#28359b',
    950: '#000000',
  },
}

SCSS

$custom: #28359b;
$custom-light: #746cb9;
$custom-dark: #000000;

JSON

{
  "hex": "#28359b",
  "rgb": {
    "r": 40,
    "g": 53,
    "b": 155
  },
  "hsl": {
    "h": 233.217,
    "s": 58.974,
    "l": 38.235
  },
  "oklch": {
    "l": 0.38958,
    "c": 0.16482,
    "h": 270.8
  },
  "luminance": 0.05364
}

Semantic roles & 50–950 ramp

primary

#28359B

secondary

#BDB361

accent

#D046E2

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #28359B

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

Preview Lab → · Contrast checker → · Palette generator →