#211B8B#211B8B

#211B8B is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.7% C 0.174 H 273.4°. Best body text is #FFFFFF at 13.17:1 contrast (WCAG AA passes).

Color values

HEX	#211B8B
RGB	rgb(33, 27, 139)
HSL	hsl(243, 67%, 33%)
HSV	hsv(243, 81%, 55%)
CMYK	cmyk(76.3%, 80.6%, 0%, 45.5%)
CIE-LAB	lab(19.93, 40.60, -60.03)
CIE-LCH	lch(19.93, 72.47, 304.07°)
OKLab	oklab(32.74% 0.0104 -0.1737)
OKLCH	oklch(32.74% 0.174 273.4)
XYZ	xyz(5.6778, 2.9707, 24.6953)
Luminance	0.0297 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#211B8B #858B1B

analogous

#1B4D8B #211B8B #591B8B

triadic

#211B8B #8B211B #1B8B21

tetradic

#211B8B #8B1B4D #858B1B #1B8B59

square

#211B8B #8B1B4D #858B1B #1B8B59

split-complementary

#211B8B #8B591B #4D8B1B

monochromatic

#090725 #151158 #211B8B #2D25BE #4D45DB

Accessibility & contrast

On white

13.17

#211B8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#211B8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #211B8B

13.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##211B8B	#FFFFFF	#000000	##FFFFFF
##211B8B	1.00	13.17	1.59	13.17
#FFFFFF	13.17	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00358E

Deuteranopia (green-blind)

#002B89

Tritanopia (blue-blind)

#003D53

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #211b8b;
/* rgb */ color: rgb(33, 27, 139);
/* oklch */ color: oklch(32.7% 0.174 273.4);

Tailwind

colors: {
  custom: {
    50: '#705aae',
    500: '#211b8b',
    950: '#000000',
  },
}

SCSS

$custom: #211b8b;
$custom-light: #705aae;
$custom-dark: #000000;

JSON

{
  "hex": "#211b8b",
  "rgb": {
    "r": 33,
    "g": 27,
    "b": 139
  },
  "hsl": {
    "h": 243.214,
    "s": 67.47,
    "l": 32.549
  },
  "oklch": {
    "l": 0.32742,
    "c": 0.17398,
    "h": 273.4
  },
  "luminance": 0.02971
}

Semantic roles & 50–950 ramp

primary

#211B8B

secondary

#B6BC45

accent

#EA3DE1

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090410

muted

#7B797F

Preview Lab

Preview with #211B8B

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

Preview Lab → · Contrast checker → · Palette generator →