#3178B2#3178B2

#3178B2 is a mid, moderate cyan. Relative luminance 0.173; OKLCH L 55.5% C 0.115 H 246.6°. Best body text is #FFFFFF at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#3178B2
RGB	rgb(49, 120, 178)
HSL	hsl(207, 57%, 45%)
HSV	hsv(207, 72%, 70%)
CMYK	cmyk(72.5%, 32.6%, 0%, 30.2%)
CIE-LAB	lab(48.63, -2.43, -37.10)
CIE-LCH	lch(48.63, 37.18, 266.26°)
OKLab	oklab(55.54% -0.0455 -0.1052)
OKLCH	oklch(55.54% 0.115 246.6)
XYZ	xyz(16.0159, 17.2985, 44.6057)
Luminance	0.1730 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3178B2 #B26B31

analogous

#31B2AC #3178B2 #3137B2

triadic

#3178B2 #B23178 #78B231

tetradic

#3178B2 #AC31B2 #B26B31 #37B231

square

#3178B2 #AC31B2 #B26B31 #37B231

split-complementary

#3178B2 #B23137 #B2AC31

monochromatic

#173752 #245882 #3178B2 #5196CF #81B3DC

Accessibility & contrast

On white

4.71

#3178B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.46

#3178B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3178B2

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3178B2	#FFFFFF	#000000	##FFFFFF
##3178B2	1.00	4.71	4.46	4.71
#FFFFFF	4.71	1.00	21.00	1.00
#000000	4.46	21.00	1.00	21.00
##FFFFFF	4.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E7AB4

Deuteranopia (green-blind)

#4C6EB1

Tritanopia (blue-blind)

#00868D

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3178b2;
/* rgb */ color: rgb(49, 120, 178);
/* oklch */ color: oklch(55.5% 0.115 246.6);

Tailwind

colors: {
  custom: {
    50: '#799ec9',
    500: '#3178b2',
    950: '#000000',
  },
}

SCSS

$custom: #3178b2;
$custom-light: #799ec9;
$custom-dark: #000000;

JSON

{
  "hex": "#3178b2",
  "rgb": {
    "r": 49,
    "g": 120,
    "b": 178
  },
  "hsl": {
    "h": 206.977,
    "s": 56.828,
    "l": 44.51
  },
  "oklch": {
    "l": 0.55536,
    "c": 0.1146,
    "h": 246.6
  },
  "luminance": 0.173
}

Semantic roles & 50–950 ramp

primary

#3178B2

secondary

#C59C79

accent

#8C48E0

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #3178B2

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

Preview Lab → · Contrast checker → · Palette generator →