#3173CE#3173CE

#3173CE is a mid, vivid cyan. Relative luminance 0.174; OKLCH L 56.1% C 0.156 H 257.3°. Best body text is #FFFFFF at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#3173CE
RGB	rgb(49, 115, 206)
HSL	hsl(215, 62%, 50%)
HSV	hsv(215, 76%, 81%)
CMYK	cmyk(76.2%, 44.2%, 0%, 19.2%)
CIE-LAB	lab(48.72, 10.97, -53.07)
CIE-LCH	lch(48.72, 54.19, 281.68°)
OKLab	oklab(56.11% -0.0342 -0.152)
OKLCH	oklch(56.11% 0.156 257.3)
XYZ	xyz(18.5338, 17.3685, 60.7562)
Luminance	0.1737 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3173CE #CE8C31

analogous

#31C2CE #3173CE #3D31CE

triadic

#3173CE #CE3173 #73CE31

tetradic

#3173CE #CE31C2 #CE8C31 #31CE3D

square

#3173CE #CE31C2 #CE8C31 #31CE3D

split-complementary

#3173CE #CE3D31 #C2CE31

monochromatic

#193C6B #25579D #3173CE #6295DA #94B6E6

Accessibility & contrast

On white

4.69

#3173CE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.47

#3173CE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3173CE

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3173CE	#FFFFFF	#000000	##FFFFFF
##3173CE	1.00	4.69	4.47	4.69
#FFFFFF	4.69	1.00	21.00	1.00
#000000	4.47	21.00	1.00	21.00
##FFFFFF	4.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#457BD1

Deuteranopia (green-blind)

#256DCC

Tritanopia (blue-blind)

#008996

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3173ce;
/* rgb */ color: rgb(49, 115, 206);
/* oklch */ color: oklch(56.1% 0.156 257.3);

Tailwind

colors: {
  custom: {
    50: '#7f9add',
    500: '#3173ce',
    950: '#000000',
  },
}

SCSS

$custom: #3173ce;
$custom-light: #7f9add;
$custom-dark: #000000;

JSON

{
  "hex": "#3173ce",
  "rgb": {
    "r": 49,
    "g": 115,
    "b": 206
  },
  "hsl": {
    "h": 214.777,
    "s": 61.569,
    "l": 50
  },
  "oklch": {
    "l": 0.56106,
    "c": 0.15584,
    "h": 257.3
  },
  "luminance": 0.17371
}

Semantic roles & 50–950 ramp

primary

#3173CE

secondary

#D1B38A

accent

#A143E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3173CE

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

Preview Lab → · Contrast checker → · Palette generator →