#2B1D8B#2B1D8B

#2B1D8B is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.7% C 0.170 H 277.9°. Best body text is #FFFFFF at 12.72:1 contrast (WCAG AA passes).

Color values

HEX	#2B1D8B
RGB	rgb(43, 29, 139)
HSL	hsl(248, 65%, 33%)
HSV	hsv(248, 79%, 55%)
CMYK	cmyk(69.1%, 79.1%, 0%, 45.5%)
CIE-LAB	lab(21.04, 40.46, -58.16)
CIE-LCH	lch(21.04, 70.85, 304.83°)
OKLab	oklab(33.72% 0.0233 -0.168)
OKLCH	oklch(33.72% 0.17 277.9)
XYZ	xyz(6.0943, 3.2559, 24.7284)
Luminance	0.0326 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B1D8B #7D8B1D

analogous

#1D468B #2B1D8B #621D8B

triadic

#2B1D8B #8B2B1D #1D8B2B

tetradic

#2B1D8B #8B1D46 #7D8B1D #1D8B62

square

#2B1D8B #8B1D46 #7D8B1D #1D8B62

split-complementary

#2B1D8B #8B621D #468B1D

monochromatic

#0C0826 #1B1258 #2B1D8B #3B28BE #5C49D9

Accessibility & contrast

On white

12.72

#2B1D8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#2B1D8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B1D8B

12.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B1D8B	#FFFFFF	#000000	##FFFFFF
##2B1D8B	1.00	12.72	1.65	12.72
#FFFFFF	12.72	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00378E

Deuteranopia (green-blind)

#002E89

Tritanopia (blue-blind)

#003E53

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #2b1d8b;
/* rgb */ color: rgb(43, 29, 139);
/* oklch */ color: oklch(33.7% 0.170 277.9);

Tailwind

colors: {
  custom: {
    50: '#735cae',
    500: '#2b1d8b',
    950: '#000000',
  },
}

SCSS

$custom: #2b1d8b;
$custom-light: #735cae;
$custom-dark: #000000;

JSON

{
  "hex": "#2b1d8b",
  "rgb": {
    "r": 43,
    "g": 29,
    "b": 139
  },
  "hsl": {
    "h": 247.636,
    "s": 65.476,
    "l": 32.941
  },
  "oklch": {
    "l": 0.33715,
    "c": 0.16963,
    "h": 277.9
  },
  "luminance": 0.03256
}

Semantic roles & 50–950 ramp

primary

#2B1D8B

secondary

#ADBB49

accent

#E83FD3

background

#F7F5FA

surface

#EEE9F5

border

#C9C5CF

text

#090410

muted

#7B797F

Preview Lab

Preview with #2B1D8B

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

Preview Lab → · Contrast checker → · Palette generator →