#2181A1#2181A1

#2181A1 is a mid, moderate cyan. Relative luminance 0.186; OKLCH L 56.4% C 0.097 H 225.6°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#2181A1
RGB	rgb(33, 129, 161)
HSL	hsl(195, 66%, 38%)
HSV	hsv(195, 80%, 63%)
CMYK	cmyk(79.5%, 19.9%, 0%, 36.9%)
CIE-LAB	lab(50.21, -15.74, -24.80)
CIE-LCH	lch(50.21, 29.37, 237.59°)
OKLab	oklab(56.42% -0.0682 -0.0696)
OKLCH	oklch(56.42% 0.097 225.6)
XYZ	xyz(14.9078, 18.5952, 36.5148)
Luminance	0.1860 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2181A1 #A14121

analogous

#21A181 #2181A1 #2141A1

triadic

#2181A1 #A12181 #81A121

tetradic

#2181A1 #8121A1 #A14121 #41A121

square

#2181A1 #8121A1 #A14121 #41A121

split-complementary

#2181A1 #A12141 #A18121

monochromatic

#0C303B #17586E #2181A1 #2CAAD4 #5EBEDE

Accessibility & contrast

On white

4.45

#2181A1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#2181A1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2181A1

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2181A1	#FFFFFF	#000000	##000000
##2181A1	1.00	4.45	4.72	4.72
#FFFFFF	4.45	1.00	21.00	21.00
#000000	4.72	21.00	1.00	1.00
##000000	4.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F7EA3

Deuteranopia (green-blind)

#5F72A1

Tritanopia (blue-blind)

#008A8B

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #2181a1;
/* rgb */ color: rgb(33, 129, 161);
/* oklch */ color: oklch(56.4% 0.097 225.6);

Tailwind

colors: {
  custom: {
    50: '#72a5bd',
    500: '#2181a1',
    950: '#000000',
  },
}

SCSS

$custom: #2181a1;
$custom-light: #72a5bd;
$custom-dark: #000000;

JSON

{
  "hex": "#2181a1",
  "rgb": {
    "r": 33,
    "g": 129,
    "b": 161
  },
  "hsl": {
    "h": 195,
    "s": 65.979,
    "l": 38.039
  },
  "oklch": {
    "l": 0.56418,
    "c": 0.09744,
    "h": 225.6
  },
  "luminance": 0.18597
}

Semantic roles & 50–950 ramp

primary

#2181A1

secondary

#C3755B

accent

#693FE9

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #2181A1

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

Preview Lab → · Contrast checker → · Palette generator →