#2B1B9F#2B1B9F

#2B1B9F is a dark, vivid blue. Relative luminance 0.038; OKLCH L 35.8% C 0.195 H 275.5°. Best body text is #FFFFFF at 11.93:1 contrast (WCAG AA passes).

Color values

HEX	#2B1B9F
RGB	rgb(43, 27, 159)
HSL	hsl(247, 71%, 36%)
HSV	hsv(247, 83%, 62%)
CMYK	cmyk(73%, 83%, 0%, 37.6%)
CIE-LAB	lab(23.00, 47.73, -67.27)
CIE-LCH	lch(23.00, 82.48, 305.35°)
OKLab	oklab(35.75% 0.0187 -0.1945)
OKLCH	oklch(35.75% 0.195 275.5)
XYZ	xyz(7.6441, 3.7999, 33.1248)
Luminance	0.0380 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B1B9F #8F9F1B

analogous

#1B4D9F #2B1B9F #6D1B9F

triadic

#2B1B9F #9F2B1B #1B9F2B

tetradic

#2B1B9F #9F1B4D #8F9F1B #1B9F6D

square

#2B1B9F #9F1B4D #8F9F1B #1B9F6D

split-complementary

#2B1B9F #9F6D1B #4D9F1B

monochromatic

#0F0936 #1D126B #2B1B9F #3924D3 #6453E2

Accessibility & contrast

On white

11.93

#2B1B9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#2B1B9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B1B9F

11.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B1B9F	#FFFFFF	#000000	##FFFFFF
##2B1B9F	1.00	11.93	1.76	11.93
#FFFFFF	11.93	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003CA3

Deuteranopia (green-blind)

#00319D

Tritanopia (blue-blind)

#00455E

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #2b1b9f;
/* rgb */ color: rgb(43, 27, 159);
/* oklch */ color: oklch(35.8% 0.195 275.5);

Tailwind

colors: {
  custom: {
    50: '#785cbd',
    500: '#2b1b9f',
    950: '#000000',
  },
}

SCSS

$custom: #2b1b9f;
$custom-light: #785cbd;
$custom-dark: #000000;

JSON

{
  "hex": "#2b1b9f",
  "rgb": {
    "r": 43,
    "g": 27,
    "b": 159
  },
  "hsl": {
    "h": 247.273,
    "s": 70.968,
    "l": 36.471
  },
  "oklch": {
    "l": 0.3575,
    "c": 0.19536,
    "h": 275.5
  },
  "luminance": 0.03801
}

Semantic roles & 50–950 ramp

primary

#2B1B9F

secondary

#B7C551

accent

#EE3AD8

background

#F8F5FB

surface

#EFE9F7

border

#CAC5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #2B1B9F

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

Preview Lab → · Contrast checker → · Palette generator →