#3173B6#3173B6

#3173B6 is a mid, vivid cyan. Relative luminance 0.163; OKLCH L 54.6% C 0.124 H 251.5°. Best body text is #FFFFFF at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#3173B6
RGB	rgb(49, 115, 182)
HSL	hsl(210, 58%, 45%)
HSV	hsv(210, 73%, 71%)
CMYK	cmyk(73.1%, 36.8%, 0%, 28.6%)
CIE-LAB	lab(47.35, 2.07, -41.44)
CIE-LCH	lch(47.35, 41.50, 272.86°)
OKLab	oklab(54.6% -0.0395 -0.1179)
OKLCH	oklch(54.6% 0.124 251.5)
XYZ	xyz(15.8377, 16.2901, 46.5565)
Luminance	0.1629 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3173B6 #B67431

analogous

#31B5B6 #3173B6 #3231B6

triadic

#3173B6 #B63173 #73B631

tetradic

#3173B6 #B631B5 #B67431 #31B632

square

#3173B6 #B631B5 #B67431 #31B632

split-complementary

#3173B6 #B63231 #B5B631

monochromatic

#173656 #245586 #3173B6 #5392D1 #84B0DE

Accessibility & contrast

On white

4.93

#3173B6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.26

#3173B6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3173B6

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3173B6	#FFFFFF	#000000	##FFFFFF
##3173B6	1.00	4.93	4.26	4.93
#FFFFFF	4.93	1.00	21.00	1.00
#000000	4.26	21.00	1.00	21.00
##FFFFFF	4.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5477B9

Deuteranopia (green-blind)

#416BB5

Tritanopia (blue-blind)

#00838C

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3173b6;
/* rgb */ color: rgb(49, 115, 182);
/* oklch */ color: oklch(54.6% 0.124 251.5);

Tailwind

colors: {
  custom: {
    50: '#7a9acc',
    500: '#3173b6',
    950: '#000000',
  },
}

SCSS

$custom: #3173b6;
$custom-light: #7a9acc;
$custom-dark: #000000;

JSON

{
  "hex": "#3173b6",
  "rgb": {
    "r": 49,
    "g": 115,
    "b": 182
  },
  "hsl": {
    "h": 210.226,
    "s": 57.576,
    "l": 45.294
  },
  "oklch": {
    "l": 0.54598,
    "c": 0.12439,
    "h": 251.5
  },
  "luminance": 0.16292
}

Semantic roles & 50–950 ramp

primary

#3173B6

secondary

#C7A27C

accent

#9447E1

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #3173B6

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

Preview Lab → · Contrast checker → · Palette generator →