#2166A8#2166A8

#2166A8 is a mid, vivid cyan. Relative luminance 0.127; OKLCH L 50.2% C 0.125 H 251.1°. Best body text is #FFFFFF at 5.95:1 contrast (WCAG AA passes).

Color values

HEX	#2166A8
RGB	rgb(33, 102, 168)
HSL	hsl(209, 67%, 39%)
HSV	hsv(209, 80%, 66%)
CMYK	cmyk(80.4%, 39.3%, 0%, 34.1%)
CIE-LAB	lab(42.23, 2.88, -41.42)
CIE-LCH	lch(42.23, 41.52, 273.98°)
OKLab	oklab(50.21% -0.0404 -0.1183)
OKLCH	oklch(50.21% 0.125 251.1)
XYZ	xyz(12.4438, 12.6517, 38.8244)
Luminance	0.1265 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2166A8 #A86321

analogous

#21A8A7 #2166A8 #2123A8

triadic

#2166A8 #A82166 #66A821

tetradic

#2166A8 #A721A8 #A86321 #23A821

square

#2166A8 #A721A8 #A86321 #23A821

split-complementary

#2166A8 #A82123 #A8A721

monochromatic

#0D2842 #174775 #2166A8 #3085D6 #63A3E0

Accessibility & contrast

On white

5.95

#2166A8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.53

#2166A8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2166A8

5.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2166A8	#FFFFFF	#000000	##FFFFFF
##2166A8	1.00	5.95	3.53	5.95
#FFFFFF	5.95	1.00	21.00	1.00
#000000	3.53	21.00	1.00	21.00
##FFFFFF	5.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#466AAB

Deuteranopia (green-blind)

#315EA7

Tritanopia (blue-blind)

#00767F

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #2166a8;
/* rgb */ color: rgb(33, 102, 168);
/* oklch */ color: oklch(50.2% 0.125 251.1);

Tailwind

colors: {
  custom: {
    50: '#7291c2',
    500: '#2166a8',
    950: '#000000',
  },
}

SCSS

$custom: #2166a8;
$custom-light: #7291c2;
$custom-dark: #000000;

JSON

{
  "hex": "#2166a8",
  "rgb": {
    "r": 33,
    "g": 102,
    "b": 168
  },
  "hsl": {
    "h": 209.333,
    "s": 67.164,
    "l": 39.412
  },
  "oklch": {
    "l": 0.50208,
    "c": 0.12498,
    "h": 251.1
  },
  "luminance": 0.12653
}

Semantic roles & 50–950 ramp

primary

#2166A8

secondary

#C5915F

accent

#923EEA

background

#F7F8FC

surface

#EDF0F8

border

#C8CBD1

text

#090C12

muted

#7B7D81

Preview Lab

Preview with #2166A8

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

Preview Lab → · Contrast checker → · Palette generator →