#2180A1#2180A1

#2180A1 is a mid, moderate cyan. Relative luminance 0.183; OKLCH L 56.2% C 0.098 H 226.6°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#2180A1
RGB	rgb(33, 128, 161)
HSL	hsl(195, 66%, 38%)
HSV	hsv(195, 80%, 63%)
CMYK	cmyk(79.5%, 20.5%, 0%, 36.9%)
CIE-LAB	lab(49.90, -15.19, -25.28)
CIE-LCH	lch(49.90, 29.49, 239.00°)
OKLab	oklab(56.17% -0.0672 -0.071)
OKLCH	oklch(56.17% 0.098 226.6)
XYZ	xyz(14.7767, 18.3331, 36.4711)
Luminance	0.1834 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2180A1 #A14221

analogous

#21A182 #2180A1 #2140A1

triadic

#2180A1 #A12180 #80A121

tetradic

#2180A1 #8221A1 #A14221 #40A121

square

#2180A1 #8221A1 #A14221 #40A121

split-complementary

#2180A1 #A12140 #A18221

monochromatic

#0C2F3B #17586E #2180A1 #2CA8D4 #5EBDDE

Accessibility & contrast

On white

4.50

#2180A1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.67

#2180A1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2180A1

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2180A1	#FFFFFF	#000000	##000000
##2180A1	1.00	4.50	4.67	4.67
#FFFFFF	4.50	1.00	21.00	21.00
#000000	4.67	21.00	1.00	1.00
##000000	4.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E7DA3

Deuteranopia (green-blind)

#5D71A1

Tritanopia (blue-blind)

#008A8B

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #2180a1;
/* rgb */ color: rgb(33, 128, 161);
/* oklch */ color: oklch(56.2% 0.098 226.6);

Tailwind

colors: {
  custom: {
    50: '#72a5bd',
    500: '#2180a1',
    950: '#000000',
  },
}

SCSS

$custom: #2180a1;
$custom-light: #72a5bd;
$custom-dark: #000000;

JSON

{
  "hex": "#2180a1",
  "rgb": {
    "r": 33,
    "g": 128,
    "b": 161
  },
  "hsl": {
    "h": 195.469,
    "s": 65.979,
    "l": 38.039
  },
  "oklch": {
    "l": 0.56168,
    "c": 0.09777,
    "h": 226.6
  },
  "luminance": 0.18335
}

Semantic roles & 50–950 ramp

primary

#2180A1

secondary

#C3765B

accent

#6B3FE9

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #2180A1

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

Preview Lab → · Contrast checker → · Palette generator →