#3178B6#3178B6

#3178B6 is a mid, moderate cyan. Relative luminance 0.175; OKLCH L 55.8% C 0.120 H 248.2°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#3178B6
RGB	rgb(49, 120, 182)
HSL	hsl(208, 58%, 45%)
HSV	hsv(208, 73%, 71%)
CMYK	cmyk(73.1%, 34.1%, 0%, 28.6%)
CIE-LAB	lab(48.84, -0.98, -39.10)
CIE-LCH	lch(48.84, 39.11, 268.57°)
OKLab	oklab(55.76% -0.0443 -0.111)
OKLCH	oklch(55.76% 0.12 248.2)
XYZ	xyz(16.4234, 17.4615, 46.7517)
Luminance	0.1746 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3178B6 #B66F31

analogous

#31B6B1 #3178B6 #3135B6

triadic

#3178B6 #B63178 #78B631

tetradic

#3178B6 #B131B6 #B66F31 #35B631

square

#3178B6 #B131B6 #B66F31 #35B631

split-complementary

#3178B6 #B63135 #B6B131

monochromatic

#173856 #245886 #3178B6 #5396D1 #84B4DE

Accessibility & contrast

On white

4.67

#3178B6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.49

#3178B6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3178B6

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3178B6	#FFFFFF	#000000	##FFFFFF
##3178B6	1.00	4.67	4.49	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.49	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C7BB9

Deuteranopia (green-blind)

#496EB5

Tritanopia (blue-blind)

#00878E

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3178b6;
/* rgb */ color: rgb(49, 120, 182);
/* oklch */ color: oklch(55.8% 0.120 248.2);

Tailwind

colors: {
  custom: {
    50: '#7a9ecc',
    500: '#3178b6',
    950: '#000000',
  },
}

SCSS

$custom: #3178b6;
$custom-light: #7a9ecc;
$custom-dark: #000000;

JSON

{
  "hex": "#3178b6",
  "rgb": {
    "r": 49,
    "g": 120,
    "b": 182
  },
  "hsl": {
    "h": 207.97,
    "s": 57.576,
    "l": 45.294
  },
  "oklch": {
    "l": 0.55762,
    "c": 0.11953,
    "h": 248.2
  },
  "luminance": 0.17463
}

Semantic roles & 50–950 ramp

primary

#3178B6

secondary

#C79F7C

accent

#8F47E1

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #3178B6

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

Preview Lab → · Contrast checker → · Palette generator →