#2B1B9B#2B1B9B

#2B1B9B is a dark, vivid blue. Relative luminance 0.037; OKLCH L 35.3% C 0.191 H 276.0°. Best body text is #FFFFFF at 12.12:1 contrast (WCAG AA passes).

Color values

HEX	#2B1B9B
RGB	rgb(43, 27, 155)
HSL	hsl(248, 70%, 36%)
HSV	hsv(248, 83%, 61%)
CMYK	cmyk(72.3%, 82.6%, 0%, 39.2%)
CIE-LAB	lab(22.53, 46.50, -65.61)
CIE-LCH	lch(22.53, 80.42, 305.33°)
OKLab	oklab(35.28% 0.0198 -0.1896)
OKLCH	oklch(35.28% 0.191 276)
XYZ	xyz(7.3026, 3.6633, 31.3262)
Luminance	0.0366 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B1B9B #8B9B1B

analogous

#1B4B9B #2B1B9B #6B1B9B

triadic

#2B1B9B #9B2B1B #1B9B2B

tetradic

#2B1B9B #9B1B4B #8B9B1B #1B9B6B

square

#2B1B9B #9B1B4B #8B9B1B #1B9B6B

split-complementary

#2B1B9B #9B6B1B #4B9B1B

monochromatic

#0E0933 #1D1267 #2B1B9B #3924CF #6250E0

Accessibility & contrast

On white

12.12

#2B1B9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#2B1B9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B1B9B

12.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B1B9B	#FFFFFF	#000000	##FFFFFF
##2B1B9B	1.00	12.12	1.73	12.12
#FFFFFF	12.12	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B9E

Deuteranopia (green-blind)

#003099

Tritanopia (blue-blind)

#00435C

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #2b1b9b;
/* rgb */ color: rgb(43, 27, 155);
/* oklch */ color: oklch(35.3% 0.191 276.0);

Tailwind

colors: {
  custom: {
    50: '#775cba',
    500: '#2b1b9b',
    950: '#000000',
  },
}

SCSS

$custom: #2b1b9b;
$custom-light: #775cba;
$custom-dark: #000000;

JSON

{
  "hex": "#2b1b9b",
  "rgb": {
    "r": 43,
    "g": 27,
    "b": 155
  },
  "hsl": {
    "h": 247.5,
    "s": 70.33,
    "l": 35.686
  },
  "oklch": {
    "l": 0.35285,
    "c": 0.19067,
    "h": 276
  },
  "luminance": 0.03664
}

Semantic roles & 50–950 ramp

primary

#2B1B9B

secondary

#B5C34F

accent

#ED3BD7

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #2B1B9B

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

Preview Lab → · Contrast checker → · Palette generator →