#2B1D9B#2B1D9B

#2B1D9B is a dark, vivid blue. Relative luminance 0.038; OKLCH L 35.5% C 0.189 H 275.8°. Best body text is #FFFFFF at 11.99:1 contrast (WCAG AA passes).

Color values

HEX	#2B1D9B
RGB	rgb(43, 29, 155)
HSL	hsl(247, 68%, 36%)
HSV	hsv(247, 81%, 61%)
CMYK	cmyk(72.3%, 81.3%, 0%, 39.2%)
CIE-LAB	lab(22.86, 45.54, -65.06)
CIE-LCH	lch(22.86, 79.42, 304.99°)
OKLab	oklab(35.51% 0.019 -0.1881)
OKLCH	oklch(35.51% 0.189 275.8)
XYZ	xyz(7.3501, 3.7582, 31.3420)
Luminance	0.0376 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B1D9B #8D9B1D

analogous

#1D4E9B #2B1D9B #6A1D9B

triadic

#2B1D9B #9B2B1D #1D9B2B

tetradic

#2B1D9B #9B1D4E #8D9B1D #1D9B6A

square

#2B1D9B #9B1D4E #8D9B1D #1D9B6A

split-complementary

#2B1D9B #9B6A1D #4E9B1D

monochromatic

#0E0A34 #1D1367 #2B1D9B #3927CF #6353DF

Accessibility & contrast

On white

11.99

#2B1D9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#2B1D9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B1D9B

11.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B1D9B	#FFFFFF	#000000	##FFFFFF
##2B1D9B	1.00	11.99	1.75	11.99
#FFFFFF	11.99	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	11.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C9E

Deuteranopia (green-blind)

#003199

Tritanopia (blue-blind)

#00445C

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #2b1d9b;
/* rgb */ color: rgb(43, 29, 155);
/* oklch */ color: oklch(35.5% 0.189 275.8);

Tailwind

colors: {
  custom: {
    50: '#775dba',
    500: '#2b1d9b',
    950: '#000000',
  },
}

SCSS

$custom: #2b1d9b;
$custom-light: #775dba;
$custom-dark: #000000;

JSON

{
  "hex": "#2b1d9b",
  "rgb": {
    "r": 43,
    "g": 29,
    "b": 155
  },
  "hsl": {
    "h": 246.667,
    "s": 68.478,
    "l": 36.078
  },
  "oklch": {
    "l": 0.35514,
    "c": 0.18905,
    "h": 275.8
  },
  "luminance": 0.03759
}

Semantic roles & 50–950 ramp

primary

#2B1D9B

secondary

#B6C252

accent

#EB3CD8

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #2B1D9B

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

Preview Lab → · Contrast checker → · Palette generator →