#3178AC#3178AC

#3178AC is a mid, moderate cyan. Relative luminance 0.171; OKLCH L 55.2% C 0.107 H 243.8°. Best body text is #FFFFFF at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#3178AC
RGB	rgb(49, 120, 172)
HSL	hsl(205, 56%, 43%)
HSV	hsv(205, 72%, 67%)
CMYK	cmyk(71.5%, 30.2%, 0%, 32.5%)
CIE-LAB	lab(48.34, -4.58, -34.08)
CIE-LCH	lch(48.34, 34.39, 262.34°)
OKLab	oklab(55.21% -0.0473 -0.0964)
OKLCH	oklch(55.21% 0.107 243.8)
XYZ	xyz(15.4266, 17.0628, 41.5021)
Luminance	0.1706 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3178AC #AC6531

analogous

#31ACA2 #3178AC #313AAC

triadic

#3178AC #AC3178 #78AC31

tetradic

#3178AC #A231AC #AC6531 #3AAC31

square

#3178AC #A231AC #AC6531 #3AAC31

split-complementary

#3178AC #AC313A #ACA231

monochromatic

#16364D #23577C #3178AC #4E97CC #7DB3DA

Accessibility & contrast

On white

4.76

#3178AC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.41

#3178AC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3178AC

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3178AC	#FFFFFF	#000000	##FFFFFF
##3178AC	1.00	4.76	4.41	4.76
#FFFFFF	4.76	1.00	21.00	1.00
#000000	4.41	21.00	1.00	21.00
##FFFFFF	4.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6079AE

Deuteranopia (green-blind)

#4F6EAB

Tritanopia (blue-blind)

#00858A

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3178ac;
/* rgb */ color: rgb(49, 120, 172);
/* oklch */ color: oklch(55.2% 0.107 243.8);

Tailwind

colors: {
  custom: {
    50: '#789ec5',
    500: '#3178ac',
    950: '#000000',
  },
}

SCSS

$custom: #3178ac;
$custom-light: #789ec5;
$custom-dark: #000000;

JSON

{
  "hex": "#3178ac",
  "rgb": {
    "r": 49,
    "g": 120,
    "b": 172
  },
  "hsl": {
    "h": 205.366,
    "s": 55.656,
    "l": 43.333
  },
  "oklch": {
    "l": 0.55207,
    "c": 0.10737,
    "h": 243.8
  },
  "luminance": 0.17064
}

Semantic roles & 50–950 ramp

primary

#3178AC

secondary

#C39676

accent

#8849DF

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #3178AC

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

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