#2B1F9B#2B1F9B

#2B1F9B is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.8% C 0.187 H 275.6°. Best body text is #FFFFFF at 11.85:1 contrast (WCAG AA passes).

Color values

HEX	#2B1F9B
RGB	rgb(43, 31, 155)
HSL	hsl(246, 67%, 36%)
HSV	hsv(246, 80%, 61%)
CMYK	cmyk(72.3%, 80%, 0%, 39.2%)
CIE-LAB	lab(23.20, 44.54, -64.49)
CIE-LCH	lch(23.20, 78.37, 304.63°)
OKLab	oklab(35.75% 0.0181 -0.1865)
OKLCH	oklch(35.75% 0.187 275.6)
XYZ	xyz(7.4007, 3.8594, 31.3589)
Luminance	0.0386 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B1F9B #8F9B1F

analogous

#1F519B #2B1F9B #691F9B

triadic

#2B1F9B #9B2B1F #1F9B2B

tetradic

#2B1F9B #9B1F51 #8F9B1F #1F9B69

square

#2B1F9B #9B1F51 #8F9B1F #1F9B69

split-complementary

#2B1F9B #9B691F #519B1F

monochromatic

#0F0B35 #1D1568 #2B1F9B #3929CE #6457DD

Accessibility & contrast

On white

11.85

#2B1F9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#2B1F9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B1F9B

11.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B1F9B	#FFFFFF	#000000	##FFFFFF
##2B1F9B	1.00	11.85	1.77	11.85
#FFFFFF	11.85	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D9E

Deuteranopia (green-blind)

#003299

Tritanopia (blue-blind)

#00455D

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #2b1f9b;
/* rgb */ color: rgb(43, 31, 155);
/* oklch */ color: oklch(35.8% 0.187 275.6);

Tailwind

colors: {
  custom: {
    50: '#775eba',
    500: '#2b1f9b',
    950: '#000000',
  },
}

SCSS

$custom: #2b1f9b;
$custom-light: #775eba;
$custom-dark: #000000;

JSON

{
  "hex": "#2b1f9b",
  "rgb": {
    "r": 43,
    "g": 31,
    "b": 155
  },
  "hsl": {
    "h": 245.806,
    "s": 66.667,
    "l": 36.471
  },
  "oklch": {
    "l": 0.35755,
    "c": 0.18734,
    "h": 275.6
  },
  "luminance": 0.0386
}

Semantic roles & 50–950 ramp

primary

#2B1F9B

secondary

#B7C155

accent

#EA3ED9

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #2B1F9B

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

Preview Lab → · Contrast checker → · Palette generator →