#2163B0#2163B0

#2163B0 is a mid, vivid cyan. Relative luminance 0.124; OKLCH L 50.0% C 0.139 H 255.0°. Best body text is #FFFFFF at 6.04:1 contrast (WCAG AA passes).

Color values

HEX	#2163B0
RGB	rgb(33, 99, 176)
HSL	hsl(212, 68%, 41%)
HSV	hsv(212, 81%, 69%)
CMYK	cmyk(81.3%, 43.8%, 0%, 31%)
CIE-LAB	lab(41.81, 7.91, -46.80)
CIE-LCH	lch(41.81, 47.46, 279.59°)
OKLab	oklab(50.04% -0.036 -0.1341)
OKLCH	oklch(50.04% 0.139 255)
XYZ	xyz(12.9226, 12.3800, 42.7744)
Luminance	0.1238 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2163B0 #B06E21

analogous

#21AAB0 #2163B0 #2721B0

triadic

#2163B0 #B02163 #63B021

tetradic

#2163B0 #B021AA #B06E21 #21B027

square

#2163B0 #B021AA #B06E21 #21B027

split-complementary

#2163B0 #B02721 #AAB021

monochromatic

#0E2949 #17467C #2163B0 #3581D9 #69A1E3

Accessibility & contrast

On white

6.04

#2163B0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.48

#2163B0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2163B0

6.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2163B0	#FFFFFF	#000000	##FFFFFF
##2163B0	1.00	6.04	3.48	6.04
#FFFFFF	6.04	1.00	21.00	1.00
#000000	3.48	21.00	1.00	21.00
##FFFFFF	6.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C6AB3

Deuteranopia (green-blind)

#1F5DAE

Tritanopia (blue-blind)

#007581

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #2163b0;
/* rgb */ color: rgb(33, 99, 176);
/* oklch */ color: oklch(50.0% 0.139 255.0);

Tailwind

colors: {
  custom: {
    50: '#748ec8',
    500: '#2163b0',
    950: '#000000',
  },
}

SCSS

$custom: #2163b0;
$custom-light: #748ec8;
$custom-dark: #000000;

JSON

{
  "hex": "#2163b0",
  "rgb": {
    "r": 33,
    "g": 99,
    "b": 176
  },
  "hsl": {
    "h": 212.308,
    "s": 68.421,
    "l": 40.98
  },
  "oklch": {
    "l": 0.50035,
    "c": 0.13887,
    "h": 255
  },
  "luminance": 0.12382
}

Semantic roles & 50–950 ramp

primary

#2163B0

secondary

#C89A64

accent

#9B3DEB

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #2163B0

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

Preview Lab → · Contrast checker → · Palette generator →