#2B2599#2B2599

#2B2599 is a dark, vivid blue. Relative luminance 0.041; OKLCH L 36.3% C 0.179 H 275.0°. Best body text is #FFFFFF at 11.49:1 contrast (WCAG AA passes).

Color values

HEX	#2B2599
RGB	rgb(43, 37, 153)
HSL	hsl(243, 61%, 37%)
HSV	hsv(243, 76%, 60%)
CMYK	cmyk(71.9%, 75.8%, 0%, 40%)
CIE-LAB	lab(24.12, 40.64, -61.75)
CIE-LCH	lch(24.12, 73.93, 303.35°)
OKLab	oklab(36.33% 0.0157 -0.1786)
OKLCH	oklch(36.33% 0.179 275)
XYZ	xyz(7.4057, 4.1359, 30.5388)
Luminance	0.0414 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B2599 #939925

analogous

#255999 #2B2599 #652599

triadic

#2B2599 #992B25 #25992B

tetradic

#2B2599 #992559 #939925 #259965

square

#2B2599 #992559 #939925 #259965

split-complementary

#2B2599 #996525 #599925

monochromatic

#0F0D36 #1D1968 #2B2599 #3931CA #6660D9

Accessibility & contrast

On white

11.49

#2B2599 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#2B2599 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B2599

11.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B2599	#FFFFFF	#000000	##FFFFFF
##2B2599	1.00	11.49	1.83	11.49
#FFFFFF	11.49	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E9C

Deuteranopia (green-blind)

#003497

Tritanopia (blue-blind)

#00475D

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #2b2599;
/* rgb */ color: rgb(43, 37, 153);
/* oklch */ color: oklch(36.3% 0.179 275.0);

Tailwind

colors: {
  custom: {
    50: '#7661b8',
    500: '#2b2599',
    950: '#000000',
  },
}

SCSS

$custom: #2b2599;
$custom-light: #7661b8;
$custom-dark: #000000;

JSON

{
  "hex": "#2b2599",
  "rgb": {
    "r": 43,
    "g": 37,
    "b": 153
  },
  "hsl": {
    "h": 243.103,
    "s": 61.053,
    "l": 37.255
  },
  "oklch": {
    "l": 0.36332,
    "c": 0.17925,
    "h": 275
  },
  "luminance": 0.04137
}

Semantic roles & 50–950 ramp

primary

#2B2599

secondary

#B9BE5C

accent

#E444DC

background

#F7F5FB

surface

#EEEAF6

border

#C9C6D0

text

#0A0512

muted

#7C7981

Preview Lab

Preview with #2B2599

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

Preview Lab → · Contrast checker → · Palette generator →