#3178A9#3178A9

#3178A9 is a mid, moderate cyan. Relative luminance 0.170; OKLCH L 55.0% C 0.104 H 242.3°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#3178A9
RGB	rgb(49, 120, 169)
HSL	hsl(205, 55%, 43%)
HSV	hsv(205, 71%, 66%)
CMYK	cmyk(71%, 29%, 0%, 33.7%)
CIE-LAB	lab(48.20, -5.65, -32.56)
CIE-LCH	lch(48.20, 33.05, 260.15°)
OKLab	oklab(55.05% -0.0483 -0.092)
OKLCH	oklch(55.05% 0.104 242.3)
XYZ	xyz(15.1418, 16.9488, 40.0019)
Luminance	0.1695 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3178A9 #A96231

analogous

#31A99E #3178A9 #313CA9

triadic

#3178A9 #A93178 #78A931

tetradic

#3178A9 #9E31A9 #A96231 #3CA931

square

#3178A9 #9E31A9 #A96231 #3CA931

split-complementary

#3178A9 #A9313C #A99E31

monochromatic

#15354A #23567A #3178A9 #4C97CB #7CB3D9

Accessibility & contrast

On white

4.78

#3178A9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.39

#3178A9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3178A9

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3178A9	#FFFFFF	#000000	##FFFFFF
##3178A9	1.00	4.78	4.39	4.78
#FFFFFF	4.78	1.00	21.00	1.00
#000000	4.39	21.00	1.00	21.00
##FFFFFF	4.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6279AB

Deuteranopia (green-blind)

#516DA8

Tritanopia (blue-blind)

#008489

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3178a9;
/* rgb */ color: rgb(49, 120, 169);
/* oklch */ color: oklch(55.0% 0.104 242.3);

Tailwind

colors: {
  custom: {
    50: '#789ec3',
    500: '#3178a9',
    950: '#000000',
  },
}

SCSS

$custom: #3178a9;
$custom-light: #789ec3;
$custom-dark: #000000;

JSON

{
  "hex": "#3178a9",
  "rgb": {
    "r": 49,
    "g": 120,
    "b": 169
  },
  "hsl": {
    "h": 204.5,
    "s": 55.046,
    "l": 42.745
  },
  "oklch": {
    "l": 0.55046,
    "c": 0.10387,
    "h": 242.3
  },
  "luminance": 0.1695
}

Semantic roles & 50–950 ramp

primary

#3178A9

secondary

#C19474

accent

#8649DE

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #3178A9

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

Preview Lab → · Contrast checker → · Palette generator →