#211B5B#211B5B

#211B5B is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.5% C 0.110 H 280.6°. Best body text is #FFFFFF at 15.30:1 contrast (WCAG AA passes).

Color values

HEX	#211B5B
RGB	rgb(33, 27, 91)
HSL	hsl(246, 54%, 23%)
HSV	hsv(246, 70%, 36%)
CMYK	cmyk(63.7%, 70.3%, 0%, 64.3%)
CIE-LAB	lab(14.75, 23.83, -37.53)
CIE-LCH	lch(14.75, 44.46, 302.42°)
OKLab	oklab(27.51% 0.0202 -0.108)
OKLCH	oklch(27.51% 0.11 280.6)
XYZ	xyz(2.9069, 1.8623, 10.1018)
Luminance	0.0186 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#211B5B #555B1B

analogous

#1B355B #211B5B #411B5B

triadic

#211B5B #5B211B #1B5B21

tetradic

#211B5B #5B1B35 #555B1B #1B5B41

square

#211B5B #5B1B35 #555B1B #1B5B41

split-complementary

#211B5B #5B411B #355B1B

monochromatic

#090718 #100D2C #211B5B #32298A #4337B9

Accessibility & contrast

On white

15.30

#211B5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#211B5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #211B5B

15.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##211B5B	#FFFFFF	#000000	##FFFFFF
##211B5B	1.00	15.30	1.37	15.30
#FFFFFF	15.30	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00275D

Deuteranopia (green-blind)

#00235A

Tritanopia (blue-blind)

#002B38

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #211b5b;
/* rgb */ color: rgb(33, 27, 91);
/* oklch */ color: oklch(27.5% 0.110 280.6);

Tailwind

colors: {
  custom: {
    50: '#64588a',
    500: '#211b5b',
    950: '#000000',
  },
}

SCSS

$custom: #211b5b;
$custom-light: #64588a;
$custom-dark: #000000;

JSON

{
  "hex": "#211b5b",
  "rgb": {
    "r": 33,
    "g": 27,
    "b": 91
  },
  "hsl": {
    "h": 245.625,
    "s": 54.237,
    "l": 23.137
  },
  "oklch": {
    "l": 0.27509,
    "c": 0.10989,
    "h": 280.6
  },
  "luminance": 0.01863
}

Semantic roles & 50–950 ramp

primary

#211B5B

secondary

#899141

accent

#DE4AD0

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06030C

muted

#7A787D

Preview Lab

Preview with #211B5B

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

Preview Lab → · Contrast checker → · Palette generator →