#2180A4#2180A4

#2180A4 is a mid, moderate cyan. Relative luminance 0.184; OKLCH L 56.3% C 0.100 H 228.8°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#2180A4
RGB	rgb(33, 128, 164)
HSL	hsl(196, 66%, 39%)
HSV	hsv(196, 80%, 64%)
CMYK	cmyk(79.9%, 22%, 0%, 35.7%)
CIE-LAB	lab(50.03, -14.13, -26.83)
CIE-LCH	lch(50.03, 30.32, 242.23°)
OKLab	oklab(56.31% -0.0661 -0.0754)
OKLCH	oklch(56.31% 0.1 228.8)
XYZ	xyz(15.0445, 18.4402, 37.8812)
Luminance	0.1844 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2180A4 #A44521

analogous

#21A486 #2180A4 #213EA4

triadic

#2180A4 #A42180 #80A421

tetradic

#2180A4 #8621A4 #A44521 #3EA421

square

#2180A4 #8621A4 #A44521 #3EA421

split-complementary

#2180A4 #A4213E #A48621

monochromatic

#0C303E #175871 #2180A4 #2DA7D5 #60BCDF

Accessibility & contrast

On white

4.48

#2180A4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#2180A4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2180A4

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2180A4	#FFFFFF	#000000	##000000
##2180A4	1.00	4.48	4.69	4.69
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D7EA6

Deuteranopia (green-blind)

#5C72A4

Tritanopia (blue-blind)

#008A8C

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #2180a4;
/* rgb */ color: rgb(33, 128, 164);
/* oklch */ color: oklch(56.3% 0.100 228.8);

Tailwind

colors: {
  custom: {
    50: '#72a4bf',
    500: '#2180a4',
    950: '#000000',
  },
}

SCSS

$custom: #2180a4;
$custom-light: #72a4bf;
$custom-dark: #000000;

JSON

{
  "hex": "#2180a4",
  "rgb": {
    "r": 33,
    "g": 128,
    "b": 164
  },
  "hsl": {
    "h": 196.489,
    "s": 66.497,
    "l": 38.627
  },
  "oklch": {
    "l": 0.56313,
    "c": 0.10029,
    "h": 228.8
  },
  "luminance": 0.18442
}

Semantic roles & 50–950 ramp

primary

#2180A4

secondary

#C4795D

accent

#6D3EE9

background

#F7FAFB

surface

#EDF4F7

border

#C8CED0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #2180A4

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

Preview Lab → · Contrast checker → · Palette generator →