#2A1B8B#2A1B8B

#2A1B8B is a dark, vivid blue. Relative luminance 0.031; OKLCH L 33.4% C 0.172 H 277.7°. Best body text is #FFFFFF at 12.90:1 contrast (WCAG AA passes).

Color values

HEX	#2A1B8B
RGB	rgb(42, 27, 139)
HSL	hsl(248, 67%, 33%)
HSV	hsv(248, 81%, 55%)
CMYK	cmyk(69.8%, 80.6%, 0%, 45.5%)
CIE-LAB	lab(20.59, 41.41, -58.90)
CIE-LCH	lch(20.59, 72.00, 305.11°)
OKLab	oklab(33.38% 0.0229 -0.1702)
OKLCH	oklch(33.38% 0.172 277.7)
XYZ	xyz(6.0055, 3.1397, 24.7106)
Luminance	0.0314 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A1B8B #7C8B1B

analogous

#1B448B #2A1B8B #621B8B

triadic

#2A1B8B #8B2A1B #1B8B2A

tetradic

#2A1B8B #8B1B44 #7C8B1B #1B8B62

square

#2A1B8B #8B1B44 #7C8B1B #1B8B62

split-complementary

#2A1B8B #8B621B #448B1B

monochromatic

#0B0725 #1B1158 #2A1B8B #3925BE #5945DB

Accessibility & contrast

On white

12.90

#2A1B8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#2A1B8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A1B8B

12.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A1B8B	#FFFFFF	#000000	##FFFFFF
##2A1B8B	1.00	12.90	1.63	12.90
#FFFFFF	12.90	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00368E

Deuteranopia (green-blind)

#002D89

Tritanopia (blue-blind)

#003D53

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #2a1b8b;
/* rgb */ color: rgb(42, 27, 139);
/* oklch */ color: oklch(33.4% 0.172 277.7);

Tailwind

colors: {
  custom: {
    50: '#735bae',
    500: '#2a1b8b',
    950: '#000000',
  },
}

SCSS

$custom: #2a1b8b;
$custom-light: #735bae;
$custom-dark: #000000;

JSON

{
  "hex": "#2a1b8b",
  "rgb": {
    "r": 42,
    "g": 27,
    "b": 139
  },
  "hsl": {
    "h": 248.036,
    "s": 67.47,
    "l": 32.549
  },
  "oklch": {
    "l": 0.33382,
    "c": 0.17171,
    "h": 277.7
  },
  "luminance": 0.0314
}

Semantic roles & 50–950 ramp

primary

#2A1B8B

secondary

#ADBC45

accent

#EA3DD3

background

#F7F5FA

surface

#EEE9F5

border

#C9C5CF

text

#090410

muted

#7B797F

Preview Lab

Preview with #2A1B8B

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

Preview Lab → · Contrast checker → · Palette generator →