#2171BE#2171BE

#2171BE is a mid, vivid cyan. Relative luminance 0.159; OKLCH L 54.2% C 0.142 H 251.7°. Best body text is #FFFFFF at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#2171BE
RGB	rgb(33, 113, 190)
HSL	hsl(209, 70%, 44%)
HSV	hsv(209, 83%, 75%)
CMYK	cmyk(82.6%, 40.5%, 0%, 25.5%)
CIE-LAB	lab(46.78, 4.47, -47.02)
CIE-LCH	lch(46.78, 47.23, 275.43°)
OKLab	oklab(54.17% -0.0445 -0.1345)
OKLCH	oklch(54.17% 0.142 251.7)
XYZ	xyz(15.8231, 15.8493, 50.9305)
Luminance	0.1585 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2171BE #BE6E21

analogous

#21BEBC #2171BE #2122BE

triadic

#2171BE #BE2171 #71BE21

tetradic

#2171BE #BC21BE #BE6E21 #22BE21

square

#2171BE #BC21BE #BE6E21 #22BE21

split-complementary

#2171BE #BE2122 #BEBC21

monochromatic

#0F3356 #18528A #2171BE #3F90DE #73AEE7

Accessibility & contrast

On white

5.04

#2171BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.17

#2171BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2171BE

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2171BE	#FFFFFF	#000000	##FFFFFF
##2171BE	1.00	5.04	4.17	5.04
#FFFFFF	5.04	1.00	21.00	1.00
#000000	4.17	21.00	1.00	21.00
##FFFFFF	5.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B76C1

Deuteranopia (green-blind)

#3168BC

Tritanopia (blue-blind)

#00838E

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #2171be;
/* rgb */ color: rgb(33, 113, 190);
/* oklch */ color: oklch(54.2% 0.142 251.7);

Tailwind

colors: {
  custom: {
    50: '#7799d2',
    500: '#2171be',
    950: '#000000',
  },
}

SCSS

$custom: #2171be;
$custom-light: #7799d2;
$custom-dark: #000000;

JSON

{
  "hex": "#2171be",
  "rgb": {
    "r": 33,
    "g": 113,
    "b": 190
  },
  "hsl": {
    "h": 209.427,
    "s": 70.404,
    "l": 43.725
  },
  "oklch": {
    "l": 0.54169,
    "c": 0.14165,
    "h": 251.7
  },
  "luminance": 0.15851
}

Semantic roles & 50–950 ramp

primary

#2171BE

secondary

#CD9C6D

accent

#923BED

background

#F7F9FC

surface

#EEF2F9

border

#C9CCD2

text

#0A0D14

muted

#7C7E82

Preview Lab

Preview with #2171BE

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

Preview Lab → · Contrast checker → · Palette generator →