#3178B7#3178B7

#3178B7 is a mid, vivid cyan. Relative luminance 0.175; OKLCH L 55.8% C 0.121 H 248.6°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#3178B7
RGB	rgb(49, 120, 183)
HSL	hsl(208, 58%, 45%)
HSV	hsv(208, 73%, 72%)
CMYK	cmyk(73.2%, 34.4%, 0%, 28.2%)
CIE-LAB	lab(48.89, -0.61, -39.59)
CIE-LCH	lch(48.89, 39.60, 269.12°)
OKLab	oklab(55.82% -0.0441 -0.1124)
OKLCH	oklch(55.82% 0.121 248.6)
XYZ	xyz(16.5271, 17.5029, 47.2979)
Luminance	0.1751 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3178B7 #B77031

analogous

#31B7B3 #3178B7 #3135B7

triadic

#3178B7 #B73178 #78B731

tetradic

#3178B7 #B331B7 #B77031 #35B731

square

#3178B7 #B331B7 #B77031 #35B731

split-complementary

#3178B7 #B73135 #B7B331

monochromatic

#173956 #245887 #3178B7 #5496D1 #84B4DE

Accessibility & contrast

On white

4.67

#3178B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#3178B7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3178B7

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3178B7	#FFFFFF	#000000	##FFFFFF
##3178B7	1.00	4.67	4.50	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B7BBA

Deuteranopia (green-blind)

#486EB6

Tritanopia (blue-blind)

#00878F

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3178b7;
/* rgb */ color: rgb(49, 120, 183);
/* oklch */ color: oklch(55.8% 0.121 248.6);

Tailwind

colors: {
  custom: {
    50: '#7a9ecd',
    500: '#3178b7',
    950: '#000000',
  },
}

SCSS

$custom: #3178b7;
$custom-light: #7a9ecd;
$custom-dark: #000000;

JSON

{
  "hex": "#3178b7",
  "rgb": {
    "r": 49,
    "g": 120,
    "b": 183
  },
  "hsl": {
    "h": 208.209,
    "s": 57.759,
    "l": 45.49
  },
  "oklch": {
    "l": 0.55819,
    "c": 0.12077,
    "h": 248.6
  },
  "luminance": 0.17505
}

Semantic roles & 50–950 ramp

primary

#3178B7

secondary

#C8A07C

accent

#8F47E1

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #3178B7

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

Preview Lab → · Contrast checker → · Palette generator →