#2173BD#2173BD

#2173BD is a mid, vivid cyan. Relative luminance 0.163; OKLCH L 54.6% C 0.138 H 250.4°. Best body text is #FFFFFF at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#2173BD
RGB	rgb(33, 115, 189)
HSL	hsl(208, 70%, 44%)
HSV	hsv(208, 83%, 74%)
CMYK	cmyk(82.5%, 39.2%, 0%, 25.9%)
CIE-LAB	lab(47.31, 2.84, -45.59)
CIE-LCH	lch(47.31, 45.68, 273.57°)
OKLab	oklab(54.57% -0.0464 -0.1303)
OKLCH	oklch(54.57% 0.138 250.4)
XYZ	xyz(15.9397, 16.2569, 50.4320)
Luminance	0.1626 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2173BD #BD6B21

analogous

#21BDB9 #2173BD #2125BD

triadic

#2173BD #BD2173 #73BD21

tetradic

#2173BD #B921BD #BD6B21 #25BD21

square

#2173BD #B921BD #BD6B21 #25BD21

split-complementary

#2173BD #BD2125 #BDB921

monochromatic

#0F3455 #185389 #2173BD #3E92DD #72AFE6

Accessibility & contrast

On white

4.94

#2173BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.25

#2173BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2173BD

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2173BD	#FFFFFF	#000000	##FFFFFF
##2173BD	1.00	4.94	4.25	4.94
#FFFFFF	4.94	1.00	21.00	1.00
#000000	4.25	21.00	1.00	21.00
##FFFFFF	4.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F78C0

Deuteranopia (green-blind)

#366ABC

Tritanopia (blue-blind)

#00858F

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #2173bd;
/* rgb */ color: rgb(33, 115, 189);
/* oklch */ color: oklch(54.6% 0.138 250.4);

Tailwind

colors: {
  custom: {
    50: '#779ad1',
    500: '#2173bd',
    950: '#000000',
  },
}

SCSS

$custom: #2173bd;
$custom-light: #779ad1;
$custom-dark: #000000;

JSON

{
  "hex": "#2173bd",
  "rgb": {
    "r": 33,
    "g": 115,
    "b": 189
  },
  "hsl": {
    "h": 208.462,
    "s": 70.27,
    "l": 43.529
  },
  "oklch": {
    "l": 0.54568,
    "c": 0.13826,
    "h": 250.4
  },
  "luminance": 0.16259
}

Semantic roles & 50–950 ramp

primary

#2173BD

secondary

#CD9A6D

accent

#8F3BED

background

#F7F9FC

surface

#EEF2F9

border

#C9CCD2

text

#0A0E14

muted

#7C7E82

Preview Lab

Preview with #2173BD

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

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