#2B288D#2B288D

#2B288D is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.5% C 0.161 H 275.8°. Best body text is #FFFFFF at 11.73:1 contrast (WCAG AA passes).

Color values

HEX	#2B288D
RGB	rgb(43, 40, 141)
HSL	hsl(242, 56%, 35%)
HSV	hsv(242, 72%, 55%)
CMYK	cmyk(69.5%, 71.6%, 0%, 44.7%)
CIE-LAB	lab(23.52, 34.77, -55.32)
CIE-LCH	lch(23.52, 65.35, 302.15°)
OKLab	oklab(35.53% 0.0161 -0.1598)
OKLCH	oklch(35.53% 0.161 275.8)
XYZ	xyz(6.5612, 3.9537, 25.6115)
Luminance	0.0395 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B288D #8A8D28

analogous

#28578D #2B288D #5D288D

triadic

#2B288D #8D2B28 #288D2B

tetradic

#2B288D #8D2857 #8A8D28 #288D5D

square

#2B288D #8D2857 #8A8D28 #288D5D

split-complementary

#2B288D #8D5D28 #578D28

monochromatic

#0E0D2E #1C1A5D #2B288D #3A36BD #615ED1

Accessibility & contrast

On white

11.73

#2B288D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#2B288D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B288D

11.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B288D	#FFFFFF	#000000	##FFFFFF
##2B288D	1.00	11.73	1.79	11.73
#FFFFFF	11.73	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C90

Deuteranopia (green-blind)

#00338B

Tritanopia (blue-blind)

#004457

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #2b288d;
/* rgb */ color: rgb(43, 40, 141);
/* oklch */ color: oklch(35.5% 0.161 275.8);

Tailwind

colors: {
  custom: {
    50: '#7363af',
    500: '#2b288d',
    950: '#000000',
  },
}

SCSS

$custom: #2b288d;
$custom-light: #7363af;
$custom-dark: #000000;

JSON

{
  "hex": "#2b288d",
  "rgb": {
    "r": 43,
    "g": 40,
    "b": 141
  },
  "hsl": {
    "h": 241.782,
    "s": 55.801,
    "l": 35.49
  },
  "oklch": {
    "l": 0.35534,
    "c": 0.16063,
    "h": 275.8
  },
  "luminance": 0.03954
}

Semantic roles & 50–950 ramp

primary

#2B288D

secondary

#B4B75A

accent

#DF49DB

background

#F7F5FA

surface

#EDEAF5

border

#C8C6CF

text

#090511

muted

#7B7980

Preview Lab

Preview with #2B288D

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

Preview Lab → · Contrast checker → · Palette generator →