#3173B0#3173B0

#3173B0 is a mid, moderate cyan. Relative luminance 0.160; OKLCH L 54.2% C 0.117 H 249.3°. Best body text is #FFFFFF at 4.99:1 contrast (WCAG AA passes).

Color values

HEX	#3173B0
RGB	rgb(49, 115, 176)
HSL	hsl(209, 56%, 44%)
HSV	hsv(209, 72%, 69%)
CMYK	cmyk(72.2%, 34.7%, 0%, 31%)
CIE-LAB	lab(47.04, -0.13, -38.46)
CIE-LCH	lch(47.04, 38.46, 269.81°)
OKLab	oklab(54.25% -0.0412 -0.1092)
OKLCH	oklch(54.25% 0.117 249.3)
XYZ	xyz(15.2309, 16.0473, 43.3606)
Luminance	0.1605 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3173B0 #B06E31

analogous

#31B0AE #3173B0 #3134B0

triadic

#3173B0 #B03173 #73B031

tetradic

#3173B0 #AE31B0 #B06E31 #34B031

square

#3173B0 #AE31B0 #B06E31 #34B031

split-complementary

#3173B0 #B03134 #B0AE31

monochromatic

#163450 #245480 #3173B0 #5092CE #80B0DC

Accessibility & contrast

On white

4.99

#3173B0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.21

#3173B0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3173B0

4.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3173B0	#FFFFFF	#000000	##FFFFFF
##3173B0	1.00	4.99	4.21	4.99
#FFFFFF	4.99	1.00	21.00	1.00
#000000	4.21	21.00	1.00	21.00
##FFFFFF	4.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5776B3

Deuteranopia (green-blind)

#456AAF

Tritanopia (blue-blind)

#008189

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3173b0;
/* rgb */ color: rgb(49, 115, 176);
/* oklch */ color: oklch(54.2% 0.117 249.3);

Tailwind

colors: {
  custom: {
    50: '#799ac8',
    500: '#3173b0',
    950: '#000000',
  },
}

SCSS

$custom: #3173b0;
$custom-light: #799ac8;
$custom-dark: #000000;

JSON

{
  "hex": "#3173b0",
  "rgb": {
    "r": 49,
    "g": 115,
    "b": 176
  },
  "hsl": {
    "h": 208.819,
    "s": 56.444,
    "l": 44.118
  },
  "oklch": {
    "l": 0.54247,
    "c": 0.11671,
    "h": 249.3
  },
  "luminance": 0.16049
}

Semantic roles & 50–950 ramp

primary

#3173B0

secondary

#C59D78

accent

#9148E0

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #3173B0

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

Preview Lab → · Contrast checker → · Palette generator →