#212571#212571

#212571 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.5% C 0.128 H 274.0°. Best body text is #FFFFFF at 13.39:1 contrast (WCAG AA passes).

Color values

HEX	#212571
RGB	rgb(33, 37, 113)
HSL	hsl(237, 55%, 29%)
HSV	hsv(237, 71%, 44%)
CMYK	cmyk(70.8%, 67.3%, 0%, 55.7%)
CIE-LAB	lab(19.38, 25.21, -44.41)
CIE-LCH	lch(19.38, 51.06, 299.58°)
OKLab	oklab(31.53% 0.0089 -0.1281)
OKLCH	oklch(31.53% 0.128 274)
XYZ	xyz(4.2684, 2.8383, 15.9425)
Luminance	0.0284 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#212571 #716D21

analogous

#214D71 #212571 #452171

triadic

#212571 #712125 #257121

tetradic

#212571 #71214D #716D21 #217145

square

#212571 #71214D #716D21 #217145

split-complementary

#212571 #714521 #4D7121

monochromatic

#070818 #131542 #212571 #2F35A0 #444BC8

Accessibility & contrast

On white

13.39

#212571 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#212571 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #212571

13.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##212571	#FFFFFF	#000000	##FFFFFF
##212571	1.00	13.39	1.57	13.39
#FFFFFF	13.39	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003373

Deuteranopia (green-blind)

#002B70

Tritanopia (blue-blind)

#003947

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #212571;
/* rgb */ color: rgb(33, 37, 113);
/* oklch */ color: oklch(31.5% 0.128 274.0);

Tailwind

colors: {
  custom: {
    50: '#685f9b',
    500: '#212571',
    950: '#000000',
  },
}

SCSS

$custom: #212571;
$custom-light: #685f9b;
$custom-dark: #000000;

JSON

{
  "hex": "#212571",
  "rgb": {
    "r": 33,
    "g": 37,
    "b": 113
  },
  "hsl": {
    "h": 237,
    "s": 54.795,
    "l": 28.627
  },
  "oklch": {
    "l": 0.31529,
    "c": 0.12846,
    "h": 274
  },
  "luminance": 0.02839
}

Semantic roles & 50–950 ramp

primary

#212571

secondary

#A5A049

accent

#D74ADE

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #212571

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

Preview Lab → · Contrast checker → · Palette generator →