#2B3571#2B3571

#2B3571 is a dark, moderate blue. Relative luminance 0.043; OKLCH L 35.5% C 0.103 H 272.9°. Best body text is #FFFFFF at 11.35:1 contrast (WCAG AA passes).

Color values

HEX	#2B3571
RGB	rgb(43, 53, 113)
HSL	hsl(231, 45%, 31%)
HSV	hsv(231, 62%, 44%)
CMYK	cmyk(61.9%, 53.1%, 0%, 55.7%)
CIE-LAB	lab(24.49, 15.90, -36.09)
CIE-LCH	lch(24.49, 39.44, 293.77°)
OKLab	oklab(35.51% 0.0053 -0.1033)
OKLCH	oklch(35.51% 0.103 272.9)
XYZ	xyz(5.2490, 4.2516, 16.1636)
Luminance	0.0425 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3571 #71672B

analogous

#2B5871 #2B3571 #442B71

triadic

#2B3571 #712B35 #35712B

tetradic

#2B3571 #712B58 #71672B #2B7144

square

#2B3571 #712B58 #71672B #2B7144

split-complementary

#2B3571 #71442B #58712B

monochromatic

#090B18 #1A2045 #2B3571 #3C4A9D #5766BF

Accessibility & contrast

On white

11.35

#2B3571 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#2B3571 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3571

11.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3571	#FFFFFF	#000000	##FFFFFF
##2B3571	1.00	11.35	1.85	11.35
#FFFFFF	11.35	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#153D73

Deuteranopia (green-blind)

#063770

Tritanopia (blue-blind)

#00434D

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #2b3571;
/* rgb */ color: rgb(43, 53, 113);
/* oklch */ color: oklch(35.5% 0.103 272.9);

Tailwind

colors: {
  custom: {
    50: '#6c6c9a',
    500: '#2b3571',
    950: '#000000',
  },
}

SCSS

$custom: #2b3571;
$custom-light: #6c6c9a;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3571",
  "rgb": {
    "r": 43,
    "g": 53,
    "b": 113
  },
  "hsl": {
    "h": 231.429,
    "s": 44.872,
    "l": 30.588
  },
  "oklch": {
    "l": 0.35507,
    "c": 0.1034,
    "h": 272.9
  },
  "luminance": 0.04252
}

Semantic roles & 50–950 ramp

primary

#2B3571

secondary

#A39855

accent

#C253D5

background

#F6F6F9

surface

#ECEBF2

border

#C7C6CC

text

#07060E

muted

#7A7A7E

Preview Lab

Preview with #2B3571

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

Preview Lab → · Contrast checker → · Palette generator →