#2A1B9B#2A1B9B

#2A1B9B is a dark, vivid blue. Relative luminance 0.036; OKLCH L 35.2% C 0.191 H 275.5°. Best body text is #FFFFFF at 12.15:1 contrast (WCAG AA passes).

Color values

HEX	#2A1B9B
RGB	rgb(42, 27, 155)
HSL	hsl(247, 70%, 36%)
HSV	hsv(247, 83%, 61%)
CMYK	cmyk(72.9%, 82.6%, 0%, 39.2%)
CIE-LAB	lab(22.45, 46.42, -65.73)
CIE-LCH	lch(22.45, 80.47, 305.23°)
OKLab	oklab(35.21% 0.0184 -0.19)
OKLCH	oklch(35.21% 0.191 275.5)
XYZ	xyz(7.2612, 3.6420, 31.3243)
Luminance	0.0364 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A1B9B #8C9B1B

analogous

#1B4C9B #2A1B9B #6A1B9B

triadic

#2A1B9B #9B2A1B #1B9B2A

tetradic

#2A1B9B #9B1B4C #8C9B1B #1B9B6A

square

#2A1B9B #9B1B4C #8C9B1B #1B9B6A

split-complementary

#2A1B9B #9B6A1B #4C9B1B

monochromatic

#0E0933 #1C1267 #2A1B9B #3824CF #6150E0

Accessibility & contrast

On white

12.15

#2A1B9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#2A1B9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A1B9B

12.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A1B9B	#FFFFFF	#000000	##FFFFFF
##2A1B9B	1.00	12.15	1.73	12.15
#FFFFFF	12.15	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.15	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: #2a1b9b;
/* rgb */ color: rgb(42, 27, 155);
/* oklch */ color: oklch(35.2% 0.191 275.5);

Tailwind

colors: {
  custom: {
    50: '#775cba',
    500: '#2a1b9b',
    950: '#000000',
  },
}

SCSS

$custom: #2a1b9b;
$custom-light: #775cba;
$custom-dark: #000000;

JSON

{
  "hex": "#2a1b9b",
  "rgb": {
    "r": 42,
    "g": 27,
    "b": 155
  },
  "hsl": {
    "h": 247.031,
    "s": 70.33,
    "l": 35.686
  },
  "oklch": {
    "l": 0.35214,
    "c": 0.19092,
    "h": 275.5
  },
  "luminance": 0.03643
}

Semantic roles & 50–950 ramp

primary

#2A1B9B

secondary

#B5C34F

accent

#ED3BD8

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #2A1B9B

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

Preview Lab → · Contrast checker → · Palette generator →