#2B288A#2B288A

#2B288A is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.2% C 0.157 H 276.1°. Best body text is #FFFFFF at 11.84:1 contrast (WCAG AA passes).

Color values

HEX	#2B288A
RGB	rgb(43, 40, 138)
HSL	hsl(242, 55%, 35%)
HSV	hsv(242, 71%, 54%)
CMYK	cmyk(68.8%, 71%, 0%, 45.9%)
CIE-LAB	lab(23.22, 33.73, -53.94)
CIE-LCH	lch(23.22, 63.62, 302.02°)
OKLab	oklab(35.23% 0.0166 -0.1558)
OKLCH	oklch(35.23% 0.157 276.1)
XYZ	xyz(6.3410, 3.8656, 24.4518)
Luminance	0.0387 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B288A #878A28

analogous

#28568A #2B288A #5C288A

triadic

#2B288A #8A2B28 #288A2B

tetradic

#2B288A #8A2856 #878A28 #288A5C

square

#2B288A #8A2856 #878A28 #288A5C

split-complementary

#2B288A #8A5C28 #568A28

monochromatic

#0D0C2B #1C1A5B #2B288A #3A36B9 #605DD0

Accessibility & contrast

On white

11.84

#2B288A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#2B288A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B288A

11.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B288A	#FFFFFF	#000000	##FFFFFF
##2B288A	1.00	11.84	1.77	11.84
#FFFFFF	11.84	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C8D

Deuteranopia (green-blind)

#003388

Tritanopia (blue-blind)

#004356

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #2b288a;
/* rgb */ color: rgb(43, 40, 138);
/* oklch */ color: oklch(35.2% 0.157 276.1);

Tailwind

colors: {
  custom: {
    50: '#7263ad',
    500: '#2b288a',
    950: '#000000',
  },
}

SCSS

$custom: #2b288a;
$custom-light: #7263ad;
$custom-dark: #000000;

JSON

{
  "hex": "#2b288a",
  "rgb": {
    "r": 43,
    "g": 40,
    "b": 138
  },
  "hsl": {
    "h": 241.837,
    "s": 55.056,
    "l": 34.902
  },
  "oklch": {
    "l": 0.35232,
    "c": 0.15666,
    "h": 276.1
  },
  "luminance": 0.03866
}

Semantic roles & 50–950 ramp

primary

#2B288A

secondary

#B2B559

accent

#DE49DA

background

#F7F5FA

surface

#EDEAF4

border

#C8C6CE

text

#090510

muted

#7B797F

Preview Lab

Preview with #2B288A

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

Preview Lab → · Contrast checker → · Palette generator →