#2B1B8D#2B1B8D

#2B1B8D is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.7% C 0.174 H 277.9°. Best body text is #FFFFFF at 12.77:1 contrast (WCAG AA passes).

Color values

HEX	#2B1B8D
RGB	rgb(43, 27, 141)
HSL	hsl(248, 68%, 33%)
HSV	hsv(248, 81%, 55%)
CMYK	cmyk(69.5%, 80.9%, 0%, 44.7%)
CIE-LAB	lab(20.90, 42.14, -59.63)
CIE-LCH	lch(20.90, 73.02, 305.25°)
OKLab	oklab(33.69% 0.0238 -0.1723)
OKLCH	oklch(33.69% 0.174 277.9)
XYZ	xyz(6.1944, 3.2200, 25.4892)
Luminance	0.0322 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B1B8D #7D8D1B

analogous

#1B448D #2B1B8D #641B8D

triadic

#2B1B8D #8D2B1B #1B8D2B

tetradic

#2B1B8D #8D1B44 #7D8D1B #1B8D64

square

#2B1B8D #8D1B44 #7D8D1B #1B8D64

split-complementary

#2B1B8D #8D641B #448D1B

monochromatic

#0C0726 #1B115A #2B1B8D #3B25C0 #5C47DC

Accessibility & contrast

On white

12.77

#2B1B8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#2B1B8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B1B8D

12.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B1B8D	#FFFFFF	#000000	##FFFFFF
##2B1B8D	1.00	12.77	1.64	12.77
#FFFFFF	12.77	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003790

Deuteranopia (green-blind)

#002D8B

Tritanopia (blue-blind)

#003E54

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #2b1b8d;
/* rgb */ color: rgb(43, 27, 141);
/* oklch */ color: oklch(33.7% 0.174 277.9);

Tailwind

colors: {
  custom: {
    50: '#745bb0',
    500: '#2b1b8d',
    950: '#000000',
  },
}

SCSS

$custom: #2b1b8d;
$custom-light: #745bb0;
$custom-dark: #000000;

JSON

{
  "hex": "#2b1b8d",
  "rgb": {
    "r": 43,
    "g": 27,
    "b": 141
  },
  "hsl": {
    "h": 248.421,
    "s": 67.857,
    "l": 32.941
  },
  "oklch": {
    "l": 0.33686,
    "c": 0.17392,
    "h": 277.9
  },
  "luminance": 0.03221
}

Semantic roles & 50–950 ramp

primary

#2B1B8D

secondary

#ADBD46

accent

#EB3DD2

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #2B1B8D

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

Preview Lab → · Contrast checker → · Palette generator →