#3178A5#3178A5

#3178A5 is a mid, moderate cyan. Relative luminance 0.168; OKLCH L 54.8% C 0.099 H 240.0°. Best body text is #FFFFFF at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#3178A5
RGB	rgb(49, 120, 165)
HSL	hsl(203, 54%, 42%)
HSV	hsv(203, 70%, 65%)
CMYK	cmyk(70.3%, 27.3%, 0%, 35.3%)
CIE-LAB	lab(48.01, -7.07, -30.52)
CIE-LCH	lch(48.01, 31.33, 256.95°)
OKLab	oklab(54.84% -0.0496 -0.086)
OKLCH	oklch(54.84% 0.099 240)
XYZ	xyz(14.7720, 16.8009, 38.0544)
Luminance	0.1680 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3178A5 #A55E31

analogous

#31A598 #3178A5 #313EA5

triadic

#3178A5 #A53178 #78A531

tetradic

#3178A5 #9831A5 #A55E31 #3EA531

square

#3178A5 #9831A5 #A55E31 #3EA531

split-complementary

#3178A5 #A5313E #A59831

monochromatic

#153347 #235676 #3178A5 #4A98C9 #79B3D7

Accessibility & contrast

On white

4.82

#3178A5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.36

#3178A5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3178A5

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3178A5	#FFFFFF	#000000	##FFFFFF
##3178A5	1.00	4.82	4.36	4.82
#FFFFFF	4.82	1.00	21.00	1.00
#000000	4.36	21.00	1.00	21.00
##FFFFFF	4.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6378A7

Deuteranopia (green-blind)

#536DA4

Tritanopia (blue-blind)

#008388

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3178a5;
/* rgb */ color: rgb(49, 120, 165);
/* oklch */ color: oklch(54.8% 0.099 240.0);

Tailwind

colors: {
  custom: {
    50: '#779ec0',
    500: '#3178a5',
    950: '#000000',
  },
}

SCSS

$custom: #3178a5;
$custom-light: #779ec0;
$custom-dark: #000000;

JSON

{
  "hex": "#3178a5",
  "rgb": {
    "r": 49,
    "g": 120,
    "b": 165
  },
  "hsl": {
    "h": 203.276,
    "s": 54.206,
    "l": 41.961
  },
  "oklch": {
    "l": 0.54836,
    "c": 0.09932,
    "h": 240
  },
  "luminance": 0.16803
}

Semantic roles & 50–950 ramp

primary

#3178A5

secondary

#C09072

accent

#834ADE

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #3178A5

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

Preview Lab → · Contrast checker → · Palette generator →