#2181AE#2181AE

#2181AE is a mid, moderate cyan. Relative luminance 0.191; OKLCH L 57.1% C 0.109 H 234.5°. Best body text is #000000 at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#2181AE
RGB	rgb(33, 129, 174)
HSL	hsl(199, 68%, 41%)
HSV	hsv(199, 81%, 68%)
CMYK	cmyk(81%, 25.9%, 0%, 31.8%)
CIE-LAB	lab(50.78, -11.10, -31.45)
CIE-LCH	lch(50.78, 33.35, 250.56°)
OKLab	oklab(57.06% -0.0634 -0.0888)
OKLCH	oklch(57.06% 0.109 234.5)
XYZ	xyz(16.1144, 19.0778, 42.8693)
Luminance	0.1908 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2181AE #AE4E21

analogous

#21AE94 #2181AE #213AAE

triadic

#2181AE #AE2181 #81AE21

tetradic

#2181AE #9421AE #AE4E21 #3AAE21

square

#2181AE #9421AE #AE4E21 #3AAE21

split-complementary

#2181AE #AE213A #AE9421

monochromatic

#0D3547 #175B7B #2181AE #34A4D8 #67BBE2

Accessibility & contrast

On white

4.36

#2181AE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.82

#2181AE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2181AE

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2181AE	#FFFFFF	#000000	##000000
##2181AE	1.00	4.36	4.82	4.82
#FFFFFF	4.36	1.00	21.00	21.00
#000000	4.82	21.00	1.00	1.00
##000000	4.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B80B0

Deuteranopia (green-blind)

#5873AD

Tritanopia (blue-blind)

#008D90

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #2181ae;
/* rgb */ color: rgb(33, 129, 174);
/* oklch */ color: oklch(57.1% 0.109 234.5);

Tailwind

colors: {
  custom: {
    50: '#74a5c6',
    500: '#2181ae',
    950: '#000000',
  },
}

SCSS

$custom: #2181ae;
$custom-light: #74a5c6;
$custom-dark: #000000;

JSON

{
  "hex": "#2181ae",
  "rgb": {
    "r": 33,
    "g": 129,
    "b": 174
  },
  "hsl": {
    "h": 199.149,
    "s": 68.116,
    "l": 40.588
  },
  "oklch": {
    "l": 0.57059,
    "c": 0.1091,
    "h": 234.5
  },
  "luminance": 0.1908
}

Semantic roles & 50–950 ramp

primary

#2181AE

secondary

#C88363

accent

#743DEB

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #2181AE

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

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