#2B1C8B#2B1C8B

#2B1C8B is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.6% C 0.171 H 278.0°. Best body text is #FFFFFF at 12.79:1 contrast (WCAG AA passes).

Color values

HEX	#2B1C8B
RGB	rgb(43, 28, 139)
HSL	hsl(248, 66%, 33%)
HSV	hsv(248, 80%, 55%)
CMYK	cmyk(69.1%, 79.9%, 0%, 45.5%)
CIE-LAB	lab(20.86, 40.99, -58.46)
CIE-LCH	lch(20.86, 71.40, 305.04°)
OKLab	oklab(33.59% 0.0239 -0.1689)
OKLCH	oklch(33.59% 0.171 278)
XYZ	xyz(6.0702, 3.2077, 24.7203)
Luminance	0.0321 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B1C8B #7C8B1C

analogous

#1C458B #2B1C8B #621C8B

triadic

#2B1C8B #8B2B1C #1C8B2B

tetradic

#2B1C8B #8B1C45 #7C8B1C #1C8B62

square

#2B1C8B #8B1C45 #7C8B1C #1C8B62

split-complementary

#2B1C8B #8B621C #458B1C

monochromatic

#0B0725 #1B1258 #2B1C8B #3B26BE #5B47DA

Accessibility & contrast

On white

12.79

#2B1C8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#2B1C8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B1C8B

12.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B1C8B	#FFFFFF	#000000	##FFFFFF
##2B1C8B	1.00	12.79	1.64	12.79
#FFFFFF	12.79	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00368E

Deuteranopia (green-blind)

#002E89

Tritanopia (blue-blind)

#003D53

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #2b1c8b;
/* rgb */ color: rgb(43, 28, 139);
/* oklch */ color: oklch(33.6% 0.171 278.0);

Tailwind

colors: {
  custom: {
    50: '#735bae',
    500: '#2b1c8b',
    950: '#000000',
  },
}

SCSS

$custom: #2b1c8b;
$custom-light: #735bae;
$custom-dark: #000000;

JSON

{
  "hex": "#2b1c8b",
  "rgb": {
    "r": 43,
    "g": 28,
    "b": 139
  },
  "hsl": {
    "h": 248.108,
    "s": 66.467,
    "l": 32.745
  },
  "oklch": {
    "l": 0.33586,
    "c": 0.17057,
    "h": 278
  },
  "luminance": 0.03208
}

Semantic roles & 50–950 ramp

primary

#2B1C8B

secondary

#ACBC47

accent

#E93ED2

background

#F7F5FA

surface

#EEE9F5

border

#C9C5CF

text

#090410

muted

#7B797F

Preview Lab

Preview with #2B1C8B

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

Preview Lab → · Contrast checker → · Palette generator →