#2B3591#2B3591

#2B3591 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.2% C 0.150 H 272.3°. Best body text is #FFFFFF at 10.39:1 contrast (WCAG AA passes).

Color values

HEX	#2B3591
RGB	rgb(43, 53, 145)
HSL	hsl(234, 54%, 37%)
HSV	hsv(234, 70%, 57%)
CMYK	cmyk(70.3%, 63.4%, 0%, 43.1%)
CIE-LAB	lab(27.03, 27.83, -52.05)
CIE-LCH	lch(27.03, 59.02, 298.13°)
OKLab	oklab(38.2% 0.0061 -0.1502)
OKLCH	oklch(38.2% 0.15 272.3)
XYZ	xyz(7.3785, 5.1034, 27.3788)
Luminance	0.0510 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3591 #91872B

analogous

#2B6891 #2B3591 #542B91

triadic

#2B3591 #912B35 #35912B

tetradic

#2B3591 #912B68 #91872B #2B9154

square

#2B3591 #912B68 #91872B #2B9154

split-complementary

#2B3591 #91542B #68912B

monochromatic

#0F1233 #1D2462 #2B3591 #3946C0 #6570D1

Accessibility & contrast

On white

10.39

#2B3591 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#2B3591 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3591

10.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3591	#FFFFFF	#000000	##FFFFFF
##2B3591	1.00	10.39	2.02	10.39
#FFFFFF	10.39	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004594

Deuteranopia (green-blind)

#003B8F

Tritanopia (blue-blind)

#004C5E

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #2b3591;
/* rgb */ color: rgb(43, 53, 145);
/* oklch */ color: oklch(38.2% 0.150 272.3);

Tailwind

colors: {
  custom: {
    50: '#726cb2',
    500: '#2b3591',
    950: '#000000',
  },
}

SCSS

$custom: #2b3591;
$custom-light: #726cb2;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3591",
  "rgb": {
    "r": 43,
    "g": 53,
    "b": 145
  },
  "hsl": {
    "h": 234.118,
    "s": 54.255,
    "l": 36.863
  },
  "oklch": {
    "l": 0.38202,
    "c": 0.1503,
    "h": 272.3
  },
  "luminance": 0.05104
}

Semantic roles & 50–950 ramp

primary

#2B3591

secondary

#B8AF60

accent

#CF4ADE

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #2B3591

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

Preview Lab → · Contrast checker → · Palette generator →