#3173D6#3173D6

#3173D6 is a mid, vivid blue. Relative luminance 0.178; OKLCH L 56.6% C 0.166 H 258.7°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#3173D6
RGB	rgb(49, 115, 214)
HSL	hsl(216, 67%, 52%)
HSV	hsv(216, 77%, 84%)
CMYK	cmyk(77.1%, 46.3%, 0%, 16.1%)
CIE-LAB	lab(49.21, 13.96, -56.83)
CIE-LCH	lch(49.21, 58.52, 283.80°)
OKLab	oklab(56.64% -0.0327 -0.1631)
OKLCH	oklch(56.64% 0.166 258.7)
XYZ	xyz(19.5305, 17.7672, 66.0054)
Luminance	0.1777 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3173D6 #D69431

analogous

#31C6D6 #3173D6 #4231D6

triadic

#3173D6 #D63173 #73D631

tetradic

#3173D6 #D631C6 #D69431 #31D642

square

#3173D6 #D631C6 #D69431 #31D642

split-complementary

#3173D6 #D64231 #C6D631

monochromatic

#173D75 #2157A8 #3173D6 #6496E0 #97B8EA

Accessibility & contrast

On white

4.61

#3173D6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#3173D6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3173D6

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3173D6	#FFFFFF	#000000	##FFFFFF
##3173D6	1.00	4.61	4.55	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D7DDA

Deuteranopia (green-blind)

#116ED4

Tritanopia (blue-blind)

#008B9A

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3173d6;
/* rgb */ color: rgb(49, 115, 214);
/* oklch */ color: oklch(56.6% 0.166 258.7);

Tailwind

colors: {
  custom: {
    50: '#819ae3',
    500: '#3173d6',
    950: '#000000',
  },
}

SCSS

$custom: #3173d6;
$custom-light: #819ae3;
$custom-dark: #000000;

JSON

{
  "hex": "#3173d6",
  "rgb": {
    "r": 49,
    "g": 115,
    "b": 214
  },
  "hsl": {
    "h": 216,
    "s": 66.802,
    "l": 51.569
  },
  "oklch": {
    "l": 0.56644,
    "c": 0.16638,
    "h": 258.7
  },
  "luminance": 0.17769
}

Semantic roles & 50–950 ramp

primary

#3173D6

secondary

#D6B98D

accent

#A53EEA

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0E15

muted

#7D7E84

Preview Lab

Preview with #3173D6

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

Preview Lab → · Contrast checker → · Palette generator →