#2170BD#2170BD

#2170BD is a mid, vivid cyan. Relative luminance 0.156; OKLCH L 53.9% C 0.141 H 251.9°. Best body text is #FFFFFF at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#2170BD
RGB	rgb(33, 112, 189)
HSL	hsl(210, 70%, 44%)
HSV	hsv(210, 83%, 74%)
CMYK	cmyk(82.5%, 40.7%, 0%, 25.9%)
CIE-LAB	lab(46.42, 4.71, -47.00)
CIE-LCH	lch(46.42, 47.24, 275.72°)
OKLab	oklab(53.87% -0.0439 -0.1345)
OKLCH	oklch(53.87% 0.141 251.9)
XYZ	xyz(15.6032, 15.5839, 50.3199)
Luminance	0.1559 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2170BD #BD6E21

analogous

#21BDBC #2170BD #2122BD

triadic

#2170BD #BD2170 #70BD21

tetradic

#2170BD #BC21BD #BD6E21 #22BD21

square

#2170BD #BC21BD #BD6E21 #22BD21

split-complementary

#2170BD #BD2122 #BDBC21

monochromatic

#0F3255 #185189 #2170BD #3E8FDD #72ADE6

Accessibility & contrast

On white

5.10

#2170BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.12

#2170BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2170BD

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2170BD	#FFFFFF	#000000	##FFFFFF
##2170BD	1.00	5.10	4.12	5.10
#FFFFFF	5.10	1.00	21.00	1.00
#000000	4.12	21.00	1.00	21.00
##FFFFFF	5.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A76C0

Deuteranopia (green-blind)

#3068BB

Tritanopia (blue-blind)

#00828D

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #2170bd;
/* rgb */ color: rgb(33, 112, 189);
/* oklch */ color: oklch(53.9% 0.141 251.9);

Tailwind

colors: {
  custom: {
    50: '#7798d1',
    500: '#2170bd',
    950: '#000000',
  },
}

SCSS

$custom: #2170bd;
$custom-light: #7798d1;
$custom-dark: #000000;

JSON

{
  "hex": "#2170bd",
  "rgb": {
    "r": 33,
    "g": 112,
    "b": 189
  },
  "hsl": {
    "h": 209.615,
    "s": 70.27,
    "l": 43.529
  },
  "oklch": {
    "l": 0.53875,
    "c": 0.14143,
    "h": 251.9
  },
  "luminance": 0.15586
}

Semantic roles & 50–950 ramp

primary

#2170BD

secondary

#CD9C6D

accent

#933BED

background

#F7F9FC

surface

#EEF2F9

border

#C9CCD2

text

#0A0D14

muted

#7C7E82

Preview Lab

Preview with #2170BD

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

Preview Lab → · Contrast checker → · Palette generator →