#2166A4#2166A4

#2166A4 is a mid, moderate cyan. Relative luminance 0.125; OKLCH L 50.0% C 0.120 H 249.7°. Best body text is #FFFFFF at 6.00:1 contrast (WCAG AA passes).

Color values

HEX	#2166A4
RGB	rgb(33, 102, 164)
HSL	hsl(208, 66%, 39%)
HSV	hsv(208, 80%, 64%)
CMYK	cmyk(79.9%, 37.8%, 0%, 35.7%)
CIE-LAB	lab(42.01, 1.33, -39.42)
CIE-LCH	lch(42.01, 39.44, 271.94°)
OKLab	oklab(49.96% -0.0415 -0.1124)
OKLCH	oklch(49.96% 0.12 249.7)
XYZ	xyz(12.0769, 12.5050, 36.8920)
Luminance	0.1251 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2166A4 #A45F21

analogous

#21A4A0 #2166A4 #2124A4

triadic

#2166A4 #A42166 #66A421

tetradic

#2166A4 #A021A4 #A45F21 #24A421

square

#2166A4 #A021A4 #A45F21 #24A421

split-complementary

#2166A4 #A42124 #A4A021

monochromatic

#0C273E #174671 #2166A4 #2D86D5 #60A3DF

Accessibility & contrast

On white

6.00

#2166A4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.50

#2166A4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2166A4

6.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2166A4	#FFFFFF	#000000	##FFFFFF
##2166A4	1.00	6.00	3.50	6.00
#FFFFFF	6.00	1.00	21.00	1.00
#000000	3.50	21.00	1.00	21.00
##FFFFFF	6.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#496AA7

Deuteranopia (green-blind)

#355EA3

Tritanopia (blue-blind)

#00757D

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #2166a4;
/* rgb */ color: rgb(33, 102, 164);
/* oklch */ color: oklch(50.0% 0.120 249.7);

Tailwind

colors: {
  custom: {
    50: '#7191bf',
    500: '#2166a4',
    950: '#000000',
  },
}

SCSS

$custom: #2166a4;
$custom-light: #7191bf;
$custom-dark: #000000;

JSON

{
  "hex": "#2166a4",
  "rgb": {
    "r": 33,
    "g": 102,
    "b": 164
  },
  "hsl": {
    "h": 208.397,
    "s": 66.497,
    "l": 38.627
  },
  "oklch": {
    "l": 0.49958,
    "c": 0.1198,
    "h": 249.7
  },
  "luminance": 0.12506
}

Semantic roles & 50–950 ramp

primary

#2166A4

secondary

#C48E5D

accent

#8F3EE9

background

#F7F8FB

surface

#EDF0F7

border

#C8CBD0

text

#090C12

muted

#7B7D81

Preview Lab

Preview with #2166A4

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

Preview Lab → · Contrast checker → · Palette generator →