#2B1BA0#2B1BA0

#2B1BA0 is a dark, vivid blue. Relative luminance 0.038; OKLCH L 35.9% C 0.197 H 275.4°. Best body text is #FFFFFF at 11.88:1 contrast (WCAG AA passes).

Color values

HEX	#2B1BA0
RGB	rgb(43, 27, 160)
HSL	hsl(247, 71%, 37%)
HSV	hsv(247, 83%, 63%)
CMYK	cmyk(73.1%, 83.1%, 0%, 37.3%)
CIE-LAB	lab(23.12, 48.03, -67.69)
CIE-LCH	lch(23.12, 83.00, 305.36°)
OKLab	oklab(35.87% 0.0184 -0.1957)
OKLCH	oklch(35.87% 0.197 275.4)
XYZ	xyz(7.7313, 3.8348, 33.5836)
Luminance	0.0384 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B1BA0 #90A01B

analogous

#1B4EA0 #2B1BA0 #6E1BA0

triadic

#2B1BA0 #A02B1B #1BA02B

tetradic

#2B1BA0 #A01B4E #90A01B #1BA06E

square

#2B1BA0 #A01B4E #90A01B #1BA06E

split-complementary

#2B1BA0 #A06E1B #4EA01B

monochromatic

#0F0937 #1D126C #2B1BA0 #3924D4 #6553E2

Accessibility & contrast

On white

11.88

#2B1BA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#2B1BA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B1BA0

11.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B1BA0	#FFFFFF	#000000	##FFFFFF
##2B1BA0	1.00	11.88	1.77	11.88
#FFFFFF	11.88	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003DA4

Deuteranopia (green-blind)

#00319E

Tritanopia (blue-blind)

#00455F

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #2b1ba0;
/* rgb */ color: rgb(43, 27, 160);
/* oklch */ color: oklch(35.9% 0.197 275.4);

Tailwind

colors: {
  custom: {
    50: '#785cbd',
    500: '#2b1ba0',
    950: '#000000',
  },
}

SCSS

$custom: #2b1ba0;
$custom-light: #785cbd;
$custom-dark: #000000;

JSON

{
  "hex": "#2b1ba0",
  "rgb": {
    "r": 43,
    "g": 27,
    "b": 160
  },
  "hsl": {
    "h": 247.218,
    "s": 71.123,
    "l": 36.667
  },
  "oklch": {
    "l": 0.35866,
    "c": 0.19653,
    "h": 275.4
  },
  "luminance": 0.03836
}

Semantic roles & 50–950 ramp

primary

#2B1BA0

secondary

#B7C552

accent

#EE3AD8

background

#F8F5FB

surface

#EFE9F7

border

#CAC5D0

text

#0B0412

muted

#7C7981

Preview Lab

Preview with #2B1BA0

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

Preview Lab → · Contrast checker → · Palette generator →