#2166C2#2166C2

#2166C2 is a mid, vivid cyan. Relative luminance 0.137; OKLCH L 52.0% C 0.159 H 257.3°. Best body text is #FFFFFF at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#2166C2
RGB	rgb(33, 102, 194)
HSL	hsl(214, 71%, 45%)
HSV	hsv(214, 83%, 76%)
CMYK	cmyk(83%, 47.4%, 0%, 23.9%)
CIE-LAB	lab(43.83, 13.00, -54.06)
CIE-LCH	lch(43.83, 55.60, 283.52°)
OKLab	oklab(51.96% -0.035 -0.1554)
OKLCH	oklch(51.96% 0.159 257.3)
XYZ	xyz(15.1126, 13.7192, 52.8800)
Luminance	0.1372 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2166C2 #C27D21

analogous

#21B6C2 #2166C2 #2D21C2

triadic

#2166C2 #C22166 #66C221

tetradic

#2166C2 #C221B6 #C27D21 #21C22D

square

#2166C2 #C221B6 #C27D21 #21C22D

split-complementary

#2166C2 #C22D21 #B6C221

monochromatic

#0F2F59 #184B8E #2166C2 #4185DF #76A7E8

Accessibility & contrast

On white

5.61

#2166C2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.74

#2166C2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2166C2

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2166C2	#FFFFFF	#000000	##FFFFFF
##2166C2	1.00	5.61	3.74	5.61
#FFFFFF	5.61	1.00	21.00	1.00
#000000	3.74	21.00	1.00	21.00
##FFFFFF	5.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#326FC5

Deuteranopia (green-blind)

#0061C0

Tritanopia (blue-blind)

#007C8A

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #2166c2;
/* rgb */ color: rgb(33, 102, 194);
/* oklch */ color: oklch(52.0% 0.159 257.3);

Tailwind

colors: {
  custom: {
    50: '#7890d5',
    500: '#2166c2',
    950: '#000000',
  },
}

SCSS

$custom: #2166c2;
$custom-light: #7890d5;
$custom-dark: #000000;

JSON

{
  "hex": "#2166c2",
  "rgb": {
    "r": 33,
    "g": 102,
    "b": 194
  },
  "hsl": {
    "h": 214.286,
    "s": 70.925,
    "l": 44.51
  },
  "oklch": {
    "l": 0.5196,
    "c": 0.15931,
    "h": 257.3
  },
  "luminance": 0.13721
}

Semantic roles & 50–950 ramp

primary

#2166C2

secondary

#CFA670

accent

#A13AEE

background

#F8F8FD

surface

#EFF0FA

border

#CACBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #2166C2

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

Preview Lab → · Contrast checker → · Palette generator →