#2181A0#2181A0

#2181A0 is a mid, moderate cyan. Relative luminance 0.186; OKLCH L 56.4% C 0.097 H 224.8°. Best body text is #000000 at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#2181A0
RGB	rgb(33, 129, 160)
HSL	hsl(195, 66%, 38%)
HSV	hsv(195, 79%, 63%)
CMYK	cmyk(79.4%, 19.4%, 0%, 37.3%)
CIE-LAB	lab(50.17, -16.09, -24.28)
CIE-LCH	lch(50.17, 29.13, 236.46°)
OKLab	oklab(56.37% -0.0686 -0.0681)
OKLCH	oklch(56.37% 0.097 224.8)
XYZ	xyz(14.8200, 18.5601, 36.0523)
Luminance	0.1856 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2181A0 #A04021

analogous

#21A080 #2181A0 #2141A0

triadic

#2181A0 #A02181 #81A021

tetradic

#2181A0 #8021A0 #A04021 #41A021

square

#2181A0 #8021A0 #A04021 #41A021

split-complementary

#2181A0 #A02141 #A08021

monochromatic

#0C2F3B #17586D #2181A0 #2BAAD3 #5EBEDE

Accessibility & contrast

On white

4.46

#2181A0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.71

#2181A0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2181A0

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2181A0	#FFFFFF	#000000	##000000
##2181A0	1.00	4.46	4.71	4.71
#FFFFFF	4.46	1.00	21.00	21.00
#000000	4.71	21.00	1.00	1.00
##000000	4.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#707EA2

Deuteranopia (green-blind)

#5F72A0

Tritanopia (blue-blind)

#008A8B

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #2181a0;
/* rgb */ color: rgb(33, 129, 160);
/* oklch */ color: oklch(56.4% 0.097 224.8);

Tailwind

colors: {
  custom: {
    50: '#72a5bc',
    500: '#2181a0',
    950: '#000000',
  },
}

SCSS

$custom: #2181a0;
$custom-light: #72a5bc;
$custom-dark: #000000;

JSON

{
  "hex": "#2181a0",
  "rgb": {
    "r": 33,
    "g": 129,
    "b": 160
  },
  "hsl": {
    "h": 194.646,
    "s": 65.803,
    "l": 37.843
  },
  "oklch": {
    "l": 0.56371,
    "c": 0.09667,
    "h": 224.8
  },
  "luminance": 0.18562
}

Semantic roles & 50–950 ramp

primary

#2181A0

secondary

#C2745B

accent

#683FE9

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #2181A0

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

Preview Lab → · Contrast checker → · Palette generator →