#3166B0#3166B0

#3166B0 is a mid, vivid cyan. Relative luminance 0.133; OKLCH L 51.2% C 0.130 H 257.3°. Best body text is #FFFFFF at 5.74:1 contrast (WCAG AA passes).

Color values

HEX	#3166B0
RGB	rgb(49, 102, 176)
HSL	hsl(215, 56%, 44%)
HSV	hsv(215, 72%, 69%)
CMYK	cmyk(72.2%, 42%, 0%, 31%)
CIE-LAB	lab(43.20, 7.97, -44.56)
CIE-LCH	lch(43.20, 45.27, 280.14°)
OKLab	oklab(51.25% -0.0287 -0.1273)
OKLCH	oklch(51.25% 0.13 257.3)
XYZ	xyz(13.8516, 13.2888, 42.9009)
Luminance	0.1329 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3166B0 #B07B31

analogous

#31A6B0 #3166B0 #3C31B0

triadic

#3166B0 #B03166 #66B031

tetradic

#3166B0 #B031A6 #B07B31 #31B03C

square

#3166B0 #B031A6 #B07B31 #31B03C

split-complementary

#3166B0 #B03C31 #A6B031

monochromatic

#162F50 #244A80 #3166B0 #5085CE #80A6DC

Accessibility & contrast

On white

5.74

#3166B0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.66

#3166B0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3166B0

5.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3166B0	#FFFFFF	#000000	##FFFFFF
##3166B0	1.00	5.74	3.66	5.74
#FFFFFF	5.74	1.00	21.00	1.00
#000000	3.66	21.00	1.00	21.00
##FFFFFF	5.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#436CB3

Deuteranopia (green-blind)

#2D61AF

Tritanopia (blue-blind)

#007782

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3166b0;
/* rgb */ color: rgb(49, 102, 176);
/* oklch */ color: oklch(51.2% 0.130 257.3);

Tailwind

colors: {
  custom: {
    50: '#7991c8',
    500: '#3166b0',
    950: '#000000',
  },
}

SCSS

$custom: #3166b0;
$custom-light: #7991c8;
$custom-dark: #000000;

JSON

{
  "hex": "#3166b0",
  "rgb": {
    "r": 49,
    "g": 102,
    "b": 176
  },
  "hsl": {
    "h": 214.961,
    "s": 56.444,
    "l": 44.118
  },
  "oklch": {
    "l": 0.51248,
    "c": 0.13048,
    "h": 257.3
  },
  "luminance": 0.1329
}

Semantic roles & 50–950 ramp

primary

#3166B0

secondary

#C5A578

accent

#A048E0

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #3166B0

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

Preview Lab → · Contrast checker → · Palette generator →