#3173BD#3173BD

#3173BD is a mid, vivid cyan. Relative luminance 0.166; OKLCH L 55.0% C 0.133 H 253.6°. Best body text is #FFFFFF at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#3173BD
RGB	rgb(49, 115, 189)
HSL	hsl(212, 59%, 47%)
HSV	hsv(212, 74%, 74%)
CMYK	cmyk(74.1%, 39.2%, 0%, 25.9%)
CIE-LAB	lab(47.73, 4.65, -44.89)
CIE-LCH	lch(47.73, 45.13, 275.91°)
OKLab	oklab(55.02% -0.0378 -0.128)
OKLCH	oklch(55.02% 0.133 253.6)
XYZ	xyz(16.5792, 16.5867, 50.4620)
Luminance	0.1659 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3173BD #BD7B31

analogous

#31B9BD #3173BD #3531BD

triadic

#3173BD #BD3173 #73BD31

tetradic

#3173BD #BD31B9 #BD7B31 #31BD35

square

#3173BD #BD31B9 #BD7B31 #31BD35

split-complementary

#3173BD #BD3531 #B9BD31

monochromatic

#18385C #24558C #3173BD #5892D4 #88B2E0

Accessibility & contrast

On white

4.86

#3173BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.32

#3173BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3173BD

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3173BD	#FFFFFF	#000000	##FFFFFF
##3173BD	1.00	4.86	4.32	4.86
#FFFFFF	4.86	1.00	21.00	1.00
#000000	4.32	21.00	1.00	21.00
##FFFFFF	4.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5078C0

Deuteranopia (green-blind)

#3A6BBC

Tritanopia (blue-blind)

#00848F

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3173bd;
/* rgb */ color: rgb(49, 115, 189);
/* oklch */ color: oklch(55.0% 0.133 253.6);

Tailwind

colors: {
  custom: {
    50: '#7b9ad1',
    500: '#3173bd',
    950: '#000000',
  },
}

SCSS

$custom: #3173bd;
$custom-light: #7b9ad1;
$custom-dark: #000000;

JSON

{
  "hex": "#3173bd",
  "rgb": {
    "r": 49,
    "g": 115,
    "b": 189
  },
  "hsl": {
    "h": 211.714,
    "s": 58.824,
    "l": 46.667
  },
  "oklch": {
    "l": 0.55021,
    "c": 0.13348,
    "h": 253.6
  },
  "luminance": 0.16589
}

Semantic roles & 50–950 ramp

primary

#3173BD

secondary

#CAA780

accent

#9846E2

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3173BD

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

Preview Lab → · Contrast checker → · Palette generator →