#2B1F8D#2B1F8D

#2B1F8D is a dark, vivid blue. Relative luminance 0.034; OKLCH L 34.2% C 0.170 H 277.3°. Best body text is #FFFFFF at 12.47:1 contrast (WCAG AA passes).

Color values

HEX	#2B1F8D
RGB	rgb(43, 31, 141)
HSL	hsl(247, 64%, 34%)
HSV	hsv(247, 78%, 55%)
CMYK	cmyk(69.5%, 78%, 0%, 44.7%)
CIE-LAB	lab(21.64, 40.03, -58.42)
CIE-LCH	lch(21.64, 70.82, 304.42°)
OKLab	oklab(34.2% 0.0217 -0.1688)
OKLCH	oklch(34.2% 0.17 277.3)
XYZ	xyz(6.2924, 3.4161, 25.5219)
Luminance	0.0342 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B1F8D #818D1F

analogous

#1F4A8D #2B1F8D #621F8D

triadic

#2B1F8D #8D2B1F #1F8D2B

tetradic

#2B1F8D #8D1F4A #818D1F #1F8D62

square

#2B1F8D #8D1F4A #818D1F #1F8D62

split-complementary

#2B1F8D #8D621F #4A8D1F

monochromatic

#0C0929 #1C145B #2B1F8D #3A2ABF #5D4ED8

Accessibility & contrast

On white

12.47

#2B1F8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#2B1F8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B1F8D

12.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B1F8D	#FFFFFF	#000000	##FFFFFF
##2B1F8D	1.00	12.47	1.68	12.47
#FFFFFF	12.47	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003890

Deuteranopia (green-blind)

#002F8B

Tritanopia (blue-blind)

#003F55

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #2b1f8d;
/* rgb */ color: rgb(43, 31, 141);
/* oklch */ color: oklch(34.2% 0.170 277.3);

Tailwind

colors: {
  custom: {
    50: '#745daf',
    500: '#2b1f8d',
    950: '#000000',
  },
}

SCSS

$custom: #2b1f8d;
$custom-light: #745daf;
$custom-dark: #000000;

JSON

{
  "hex": "#2b1f8d",
  "rgb": {
    "r": 43,
    "g": 31,
    "b": 141
  },
  "hsl": {
    "h": 246.545,
    "s": 63.953,
    "l": 33.725
  },
  "oklch": {
    "l": 0.34199,
    "c": 0.17019,
    "h": 277.3
  },
  "luminance": 0.03417
}

Semantic roles & 50–950 ramp

primary

#2B1F8D

secondary

#AFBB4D

accent

#E741D5

background

#F7F5FA

surface

#EEE9F5

border

#C9C5CF

text

#090411

muted

#7B7980

Preview Lab

Preview with #2B1F8D

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

Preview Lab → · Contrast checker → · Palette generator →