#2171BD#2171BD

#2171BD is a mid, vivid cyan. Relative luminance 0.158; OKLCH L 54.1% C 0.140 H 251.4°. Best body text is #FFFFFF at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#2171BD
RGB	rgb(33, 113, 189)
HSL	hsl(209, 70%, 44%)
HSV	hsv(209, 83%, 74%)
CMYK	cmyk(82.5%, 40.2%, 0%, 25.9%)
CIE-LAB	lab(46.72, 4.08, -46.53)
CIE-LCH	lch(46.72, 46.71, 275.02°)
OKLab	oklab(54.11% -0.0447 -0.1331)
OKLCH	oklch(54.11% 0.14 251.4)
XYZ	xyz(15.7141, 15.8058, 50.3568)
Luminance	0.1581 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2171BD #BD6D21

analogous

#21BDBB #2171BD #2123BD

triadic

#2171BD #BD2171 #71BD21

tetradic

#2171BD #BB21BD #BD6D21 #23BD21

square

#2171BD #BB21BD #BD6D21 #23BD21

split-complementary

#2171BD #BD2123 #BDBB21

monochromatic

#0F3355 #185289 #2171BD #3E90DD #72AEE6

Accessibility & contrast

On white

5.05

#2171BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.16

#2171BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2171BD

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2171BD	#FFFFFF	#000000	##FFFFFF
##2171BD	1.00	5.05	4.16	5.05
#FFFFFF	5.05	1.00	21.00	1.00
#000000	4.16	21.00	1.00	21.00
##FFFFFF	5.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C76C0

Deuteranopia (green-blind)

#3268BC

Tritanopia (blue-blind)

#00838E

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #2171bd;
/* rgb */ color: rgb(33, 113, 189);
/* oklch */ color: oklch(54.1% 0.140 251.4);

Tailwind

colors: {
  custom: {
    50: '#7799d1',
    500: '#2171bd',
    950: '#000000',
  },
}

SCSS

$custom: #2171bd;
$custom-light: #7799d1;
$custom-dark: #000000;

JSON

{
  "hex": "#2171bd",
  "rgb": {
    "r": 33,
    "g": 113,
    "b": 189
  },
  "hsl": {
    "h": 209.231,
    "s": 70.27,
    "l": 43.529
  },
  "oklch": {
    "l": 0.54106,
    "c": 0.14036,
    "h": 251.4
  },
  "luminance": 0.15808
}

Semantic roles & 50–950 ramp

primary

#2171BD

secondary

#CD9C6D

accent

#923BED

background

#F7F9FC

surface

#EEF2F9

border

#C9CCD2

text

#0A0D14

muted

#7C7E82

Preview Lab

Preview with #2171BD

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

Preview Lab → · Contrast checker → · Palette generator →