#28239B#28239B

#28239B is a dark, vivid blue. Relative luminance 0.040; OKLCH L 36.1% C 0.184 H 273.9°. Best body text is #FFFFFF at 11.64:1 contrast (WCAG AA passes).

Color values

HEX	#28239B
RGB	rgb(40, 35, 155)
HSL	hsl(243, 63%, 37%)
HSV	hsv(243, 77%, 61%)
CMYK	cmyk(74.2%, 77.4%, 0%, 39.2%)
CIE-LAB	lab(23.73, 42.14, -63.61)
CIE-LCH	lch(23.73, 76.31, 303.52°)
OKLab	oklab(36.07% 0.0124 -0.184)
OKLCH	oklch(36.07% 0.184 273.9)
XYZ	xyz(7.3905, 4.0190, 31.3902)
Luminance	0.0402 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28239B #969B23

analogous

#235A9B #28239B #64239B

triadic

#28239B #9B2823 #239B28

tetradic

#28239B #9B235A #969B23 #239B64

square

#28239B #9B235A #969B23 #239B64

split-complementary

#28239B #9B6423 #5A9B23

monochromatic

#0E0C37 #1B1869 #28239B #352ECD #635EDB

Accessibility & contrast

On white

11.64

#28239B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#28239B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28239B

11.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28239B	#FFFFFF	#000000	##FFFFFF
##28239B	1.00	11.64	1.80	11.64
#FFFFFF	11.64	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E9E

Deuteranopia (green-blind)

#003399

Tritanopia (blue-blind)

#00475E

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #28239b;
/* rgb */ color: rgb(40, 35, 155);
/* oklch */ color: oklch(36.1% 0.184 273.9);

Tailwind

colors: {
  custom: {
    50: '#7560ba',
    500: '#28239b',
    950: '#000000',
  },
}

SCSS

$custom: #28239b;
$custom-light: #7560ba;
$custom-dark: #000000;

JSON

{
  "hex": "#28239b",
  "rgb": {
    "r": 40,
    "g": 35,
    "b": 155
  },
  "hsl": {
    "h": 242.5,
    "s": 63.158,
    "l": 37.255
  },
  "oklch": {
    "l": 0.36074,
    "c": 0.18445,
    "h": 273.9
  },
  "luminance": 0.0402
}

Semantic roles & 50–950 ramp

primary

#28239B

secondary

#BBBF5A

accent

#E642DF

background

#F7F5FB

surface

#EEEAF6

border

#C9C6D0

text

#0A0512

muted

#7C7981

Preview Lab

Preview with #28239B

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

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