#2181A9#2181A9

#2181A9 is a mid, moderate cyan. Relative luminance 0.189; OKLCH L 56.8% C 0.104 H 231.3°. Best body text is #000000 at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#2181A9
RGB	rgb(33, 129, 169)
HSL	hsl(198, 67%, 40%)
HSV	hsv(198, 80%, 66%)
CMYK	cmyk(80.5%, 23.7%, 0%, 33.7%)
CIE-LAB	lab(50.55, -12.90, -28.91)
CIE-LCH	lch(50.55, 31.66, 245.94°)
OKLab	oklab(56.81% -0.0652 -0.0814)
OKLCH	oklch(56.81% 0.104 231.3)
XYZ	xyz(15.6360, 18.8865, 40.3498)
Luminance	0.1889 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2181A9 #A94921

analogous

#21A98D #2181A9 #213DA9

triadic

#2181A9 #A92181 #81A921

tetradic

#2181A9 #8D21A9 #A94921 #3DA921

square

#2181A9 #8D21A9 #A94921 #3DA921

split-complementary

#2181A9 #A9213D #A98D21

monochromatic

#0D3343 #175A76 #2181A9 #31A6D7 #64BCE1

Accessibility & contrast

On white

4.40

#2181A9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.78

#2181A9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2181A9

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2181A9	#FFFFFF	#000000	##000000
##2181A9	1.00	4.40	4.78	4.78
#FFFFFF	4.40	1.00	21.00	21.00
#000000	4.78	21.00	1.00	1.00
##000000	4.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D7FAB

Deuteranopia (green-blind)

#5B73A8

Tritanopia (blue-blind)

#008C8E

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #2181a9;
/* rgb */ color: rgb(33, 129, 169);
/* oklch */ color: oklch(56.8% 0.104 231.3);

Tailwind

colors: {
  custom: {
    50: '#73a5c2',
    500: '#2181a9',
    950: '#000000',
  },
}

SCSS

$custom: #2181a9;
$custom-light: #73a5c2;
$custom-dark: #000000;

JSON

{
  "hex": "#2181a9",
  "rgb": {
    "r": 33,
    "g": 129,
    "b": 169
  },
  "hsl": {
    "h": 197.647,
    "s": 67.327,
    "l": 39.608
  },
  "oklch": {
    "l": 0.56807,
    "c": 0.10432,
    "h": 231.3
  },
  "luminance": 0.18888
}

Semantic roles & 50–950 ramp

primary

#2181A9

secondary

#C67E60

accent

#703EEA

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #2181A9

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

Preview Lab → · Contrast checker → · Palette generator →