#2B337B#2B337B

#2B337B is a dark, vivid blue. Relative luminance 0.043; OKLCH L 35.9% C 0.121 H 273.8°. Best body text is #FFFFFF at 11.28:1 contrast (WCAG AA passes).

Color values

HEX	#2B337B
RGB	rgb(43, 51, 123)
HSL	hsl(234, 48%, 33%)
HSV	hsv(234, 65%, 48%)
CMYK	cmyk(65%, 58.5%, 0%, 51.8%)
CIE-LAB	lab(24.67, 21.01, -42.15)
CIE-LCH	lch(24.67, 47.10, 296.50°)
OKLab	oklab(35.89% 0.008 -0.1211)
OKLCH	oklch(35.89% 0.121 273.8)
XYZ	xyz(5.7541, 4.3108, 19.2639)
Luminance	0.0431 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B337B #7B732B

analogous

#2B5B7B #2B337B #4B2B7B

triadic

#2B337B #7B2B33 #337B2B

tetradic

#2B337B #7B2B5B #7B732B #2B7B4B

square

#2B337B #7B2B5B #7B732B #2B7B4B

split-complementary

#2B337B #7B4B2B #5B7B2B

monochromatic

#0B0D20 #1B204E #2B337B #3B46A8 #5B65C6

Accessibility & contrast

On white

11.28

#2B337B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#2B337B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B337B

11.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B337B	#FFFFFF	#000000	##FFFFFF
##2B337B	1.00	11.28	1.86	11.28
#FFFFFF	11.28	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E7D

Deuteranopia (green-blind)

#00377A

Tritanopia (blue-blind)

#004451

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #2b337b;
/* rgb */ color: rgb(43, 51, 123);
/* oklch */ color: oklch(35.9% 0.121 273.8);

Tailwind

colors: {
  custom: {
    50: '#6e6aa2',
    500: '#2b337b',
    950: '#000000',
  },
}

SCSS

$custom: #2b337b;
$custom-light: #6e6aa2;
$custom-dark: #000000;

JSON

{
  "hex": "#2b337b",
  "rgb": {
    "r": 43,
    "g": 51,
    "b": 123
  },
  "hsl": {
    "h": 234,
    "s": 48.193,
    "l": 32.549
  },
  "oklch": {
    "l": 0.35886,
    "c": 0.12138,
    "h": 273.8
  },
  "luminance": 0.04311
}

Semantic roles & 50–950 ramp

primary

#2B337B

secondary

#ABA356

accent

#CA50D8

background

#F6F6FA

surface

#ECEBF3

border

#C7C6CD

text

#08060F

muted

#7A7A7F

Preview Lab

Preview with #2B337B

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

Preview Lab → · Contrast checker → · Palette generator →