#2181A6#2181A6

#2181A6 is a mid, moderate cyan. Relative luminance 0.188; OKLCH L 56.7% C 0.102 H 229.3°. Best body text is #000000 at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#2181A6
RGB	rgb(33, 129, 166)
HSL	hsl(197, 67%, 39%)
HSV	hsv(197, 80%, 65%)
CMYK	cmyk(80.1%, 22.3%, 0%, 34.9%)
CIE-LAB	lab(50.42, -13.97, -27.37)
CIE-LCH	lch(50.42, 30.73, 242.95°)
OKLab	oklab(56.66% -0.0663 -0.077)
OKLCH	oklch(56.66% 0.102 229.3)
XYZ	xyz(15.3576, 18.7751, 38.8835)
Luminance	0.1878 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2181A6 #A64621

analogous

#21A689 #2181A6 #213FA6

triadic

#2181A6 #A62181 #81A621

tetradic

#2181A6 #8921A6 #A64621 #3FA621

square

#2181A6 #8921A6 #A64621 #3FA621

split-complementary

#2181A6 #A6213F #A68921

monochromatic

#0D3240 #175973 #2181A6 #2FA7D6 #62BDE0

Accessibility & contrast

On white

4.42

#2181A6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.76

#2181A6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2181A6

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2181A6	#FFFFFF	#000000	##000000
##2181A6	1.00	4.42	4.76	4.76
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.76	21.00	1.00	1.00
##000000	4.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E7FA8

Deuteranopia (green-blind)

#5C73A5

Tritanopia (blue-blind)

#008B8D

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #2181a6;
/* rgb */ color: rgb(33, 129, 166);
/* oklch */ color: oklch(56.7% 0.102 229.3);

Tailwind

colors: {
  custom: {
    50: '#73a5c0',
    500: '#2181a6',
    950: '#000000',
  },
}

SCSS

$custom: #2181a6;
$custom-light: #73a5c0;
$custom-dark: #000000;

JSON

{
  "hex": "#2181a6",
  "rgb": {
    "r": 33,
    "g": 129,
    "b": 166
  },
  "hsl": {
    "h": 196.692,
    "s": 66.834,
    "l": 39.02
  },
  "oklch": {
    "l": 0.56659,
    "c": 0.10161,
    "h": 229.3
  },
  "luminance": 0.18777
}

Semantic roles & 50–950 ramp

primary

#2181A6

secondary

#C57B5E

accent

#6E3EEA

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #2181A6

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

Preview Lab → · Contrast checker → · Palette generator →