#2B1B81#2B1B81

#2B1B81 is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.4% C 0.159 H 279.8°. Best body text is #FFFFFF at 13.32:1 contrast (WCAG AA passes).

Color values

HEX	#2B1B81
RGB	rgb(43, 27, 129)
HSL	hsl(249, 65%, 31%)
HSV	hsv(249, 79%, 51%)
CMYK	cmyk(66.7%, 79.1%, 0%, 49.4%)
CIE-LAB	lab(19.57, 38.32, -54.31)
CIE-LCH	lch(19.57, 66.46, 305.21°)
OKLab	oklab(32.35% 0.0272 -0.1568)
OKLCH	oklch(32.35% 0.159 279.8)
XYZ	xyz(5.3494, 2.8820, 21.0390)
Luminance	0.0288 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B1B81 #71811B

analogous

#1B3E81 #2B1B81 #5E1B81

triadic

#2B1B81 #812B1B #1B812B

tetradic

#2B1B81 #811B3E #71811B #1B815E

square

#2B1B81 #811B3E #71811B #1B815E

split-complementary

#2B1B81 #815E1B #3E811B

monochromatic

#09061C #1A104E #2B1B81 #3C26B4 #573FD7

Accessibility & contrast

On white

13.32

#2B1B81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#2B1B81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B1B81

13.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B1B81	#FFFFFF	#000000	##FFFFFF
##2B1B81	1.00	13.32	1.58	13.32
#FFFFFF	13.32	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003384

Deuteranopia (green-blind)

#002B7F

Tritanopia (blue-blind)

#00394D

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #2b1b81;
/* rgb */ color: rgb(43, 27, 129);
/* oklch */ color: oklch(32.4% 0.159 279.8);

Tailwind

colors: {
  custom: {
    50: '#715aa7',
    500: '#2b1b81',
    950: '#000000',
  },
}

SCSS

$custom: #2b1b81;
$custom-light: #715aa7;
$custom-dark: #000000;

JSON

{
  "hex": "#2b1b81",
  "rgb": {
    "r": 43,
    "g": 27,
    "b": 129
  },
  "hsl": {
    "h": 249.412,
    "s": 65.385,
    "l": 30.588
  },
  "oklch": {
    "l": 0.32353,
    "c": 0.15911,
    "h": 279.8
  },
  "luminance": 0.02882
}

Semantic roles & 50–950 ramp

primary

#2B1B81

secondary

#A3B543

accent

#E83FCE

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #2B1B81

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

Preview Lab → · Contrast checker → · Palette generator →