#2B3381#2B3381

#2B3381 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.4% C 0.130 H 273.6°. Best body text is #FFFFFF at 11.09:1 contrast (WCAG AA passes).

Color values

HEX	#2B3381
RGB	rgb(43, 51, 129)
HSL	hsl(234, 50%, 34%)
HSV	hsv(234, 67%, 51%)
CMYK	cmyk(66.7%, 60.5%, 0%, 49.4%)
CIE-LAB	lab(25.15, 23.24, -45.15)
CIE-LCH	lch(25.15, 50.78, 297.24°)
OKLab	oklab(36.4% 0.0081 -0.1299)
OKLCH	oklch(36.4% 0.13 273.6)
XYZ	xyz(6.1412, 4.4657, 21.3030)
Luminance	0.0447 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3381 #81792B

analogous

#2B5E81 #2B3381 #4E2B81

triadic

#2B3381 #812B33 #33812B

tetradic

#2B3381 #812B5E #81792B #2B814E

square

#2B3381 #812B5E #81792B #2B814E

split-complementary

#2B3381 #814E2B #5E812B

monochromatic

#0C0F25 #1C2153 #2B3381 #3A45AF #5D67C9

Accessibility & contrast

On white

11.09

#2B3381 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#2B3381 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3381

11.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3381	#FFFFFF	#000000	##FFFFFF
##2B3381	1.00	11.09	1.89	11.09
#FFFFFF	11.09	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004084

Deuteranopia (green-blind)

#00387F

Tritanopia (blue-blind)

#004654

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #2b3381;
/* rgb */ color: rgb(43, 51, 129);
/* oklch */ color: oklch(36.4% 0.130 273.6);

Tailwind

colors: {
  custom: {
    50: '#6f6aa6',
    500: '#2b3381',
    950: '#000000',
  },
}

SCSS

$custom: #2b3381;
$custom-light: #6f6aa6;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3381",
  "rgb": {
    "r": 43,
    "g": 51,
    "b": 129
  },
  "hsl": {
    "h": 234.419,
    "s": 50,
    "l": 33.725
  },
  "oklch": {
    "l": 0.36396,
    "c": 0.13018,
    "h": 273.6
  },
  "luminance": 0.04466
}

Semantic roles & 50–950 ramp

primary

#2B3381

secondary

#AFA759

accent

#CD4EDA

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#08060F

muted

#7B7A7F

Preview Lab

Preview with #2B3381

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

Preview Lab → · Contrast checker → · Palette generator →