#213B71#213B71

#213B71 is a dark, moderate blue. Relative luminance 0.046; OKLCH L 36.3% C 0.099 H 263.1°. Best body text is #FFFFFF at 10.89:1 contrast (WCAG AA passes).

Color values

HEX	#213B71
RGB	rgb(33, 59, 113)
HSL	hsl(221, 55%, 29%)
HSV	hsv(221, 71%, 44%)
CMYK	cmyk(70.8%, 47.8%, 0%, 55.7%)
CIE-LAB	lab(25.69, 9.75, -34.19)
CIE-LCH	lch(25.69, 35.55, 285.91°)
OKLab	oklab(36.27% -0.0119 -0.0978)
OKLCH	oklch(36.27% 0.099 263.1)
XYZ	xyz(5.1707, 4.6430, 16.2433)
Luminance	0.0464 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#213B71 #715721

analogous

#216371 #213B71 #2F2171

triadic

#213B71 #71213B #3B7121

tetradic

#213B71 #712163 #715721 #21712F

square

#213B71 #712163 #715721 #21712F

split-complementary

#213B71 #712F21 #637121

monochromatic

#070C18 #132242 #213B71 #2F54A0 #446FC8

Accessibility & contrast

On white

10.89

#213B71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#213B71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #213B71

10.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##213B71	#FFFFFF	#000000	##FFFFFF
##213B71	1.00	10.89	1.93	10.89
#FFFFFF	10.89	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#204173

Deuteranopia (green-blind)

#113970

Tritanopia (blue-blind)

#004750

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #213b71;
/* rgb */ color: rgb(33, 59, 113);
/* oklch */ color: oklch(36.3% 0.099 263.1);

Tailwind

colors: {
  custom: {
    50: '#66709a',
    500: '#213b71',
    950: '#000000',
  },
}

SCSS

$custom: #213b71;
$custom-light: #66709a;
$custom-dark: #000000;

JSON

{
  "hex": "#213b71",
  "rgb": {
    "r": 33,
    "g": 59,
    "b": 113
  },
  "hsl": {
    "h": 220.5,
    "s": 54.795,
    "l": 28.627
  },
  "oklch": {
    "l": 0.36268,
    "c": 0.09853,
    "h": 263.1
  },
  "luminance": 0.04644
}

Semantic roles & 50–950 ramp

primary

#213B71

secondary

#A58749

accent

#AE4ADE

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #213B71

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

Preview Lab → · Contrast checker → · Palette generator →