#2180A8#2180A8

#2180A8 is a mid, moderate cyan. Relative luminance 0.186; OKLCH L 56.5% C 0.104 H 231.5°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#2180A8
RGB	rgb(33, 128, 168)
HSL	hsl(198, 67%, 39%)
HSV	hsv(198, 80%, 66%)
CMYK	cmyk(80.4%, 23.8%, 0%, 34.1%)
CIE-LAB	lab(50.20, -12.70, -28.88)
CIE-LCH	lch(50.20, 31.55, 246.27°)
OKLab	oklab(56.51% -0.0646 -0.0813)
OKLCH	oklch(56.51% 0.104 231.5)
XYZ	xyz(15.4114, 18.5869, 39.8136)
Luminance	0.1859 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2180A8 #A84921

analogous

#21A88D #2180A8 #213CA8

triadic

#2180A8 #A82180 #80A821

tetradic

#2180A8 #8D21A8 #A84921 #3CA821

square

#2180A8 #8D21A8 #A84921 #3CA821

split-complementary

#2180A8 #A8213C #A88D21

monochromatic

#0D3242 #175975 #2180A8 #30A5D6 #63BBE0

Accessibility & contrast

On white

4.45

#2180A8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#2180A8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2180A8

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2180A8	#FFFFFF	#000000	##000000
##2180A8	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)

#6C7EAA

Deuteranopia (green-blind)

#5A72A7

Tritanopia (blue-blind)

#008B8D

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #2180a8;
/* rgb */ color: rgb(33, 128, 168);
/* oklch */ color: oklch(56.5% 0.104 231.5);

Tailwind

colors: {
  custom: {
    50: '#73a4c2',
    500: '#2180a8',
    950: '#000000',
  },
}

SCSS

$custom: #2180a8;
$custom-light: #73a4c2;
$custom-dark: #000000;

JSON

{
  "hex": "#2180a8",
  "rgb": {
    "r": 33,
    "g": 128,
    "b": 168
  },
  "hsl": {
    "h": 197.778,
    "s": 67.164,
    "l": 39.412
  },
  "oklch": {
    "l": 0.5651,
    "c": 0.10388,
    "h": 231.5
  },
  "luminance": 0.18589
}

Semantic roles & 50–950 ramp

primary

#2180A8

secondary

#C57E5F

accent

#713EEA

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #2180A8

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

Preview Lab → · Contrast checker → · Palette generator →