#3178BC#3178BC

#3178BC is a mid, vivid cyan. Relative luminance 0.177; OKLCH L 56.1% C 0.127 H 250.4°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#3178BC
RGB	rgb(49, 120, 188)
HSL	hsl(209, 59%, 46%)
HSV	hsv(209, 74%, 74%)
CMYK	cmyk(73.9%, 36.2%, 0%, 26.3%)
CIE-LAB	lab(49.15, 1.21, -42.07)
CIE-LCH	lch(49.15, 42.08, 271.65°)
OKLab	oklab(56.11% -0.0427 -0.1197)
OKLCH	oklch(56.11% 0.127 250.4)
XYZ	xyz(17.0568, 17.7148, 50.0876)
Luminance	0.1772 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3178BC #BC7531

analogous

#31BCBB #3178BC #3132BC

triadic

#3178BC #BC3178 #78BC31

tetradic

#3178BC #BB31BC #BC7531 #32BC31

square

#3178BC #BB31BC #BC7531 #32BC31

split-complementary

#3178BC #BC3132 #BCBB31

monochromatic

#183A5B #24598B #3178BC #5796D3 #88B5E0

Accessibility & contrast

On white

4.62

#3178BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#3178BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3178BC

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3178BC	#FFFFFF	#000000	##FFFFFF
##3178BC	1.00	4.62	4.54	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#597CBF

Deuteranopia (green-blind)

#446FBB

Tritanopia (blue-blind)

#008891

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3178bc;
/* rgb */ color: rgb(49, 120, 188);
/* oklch */ color: oklch(56.1% 0.127 250.4);

Tailwind

colors: {
  custom: {
    50: '#7b9ed0',
    500: '#3178bc',
    950: '#000000',
  },
}

SCSS

$custom: #3178bc;
$custom-light: #7b9ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#3178bc",
  "rgb": {
    "r": 49,
    "g": 120,
    "b": 188
  },
  "hsl": {
    "h": 209.353,
    "s": 58.65,
    "l": 46.471
  },
  "oklch": {
    "l": 0.56109,
    "c": 0.12707,
    "h": 250.4
  },
  "luminance": 0.17717
}

Semantic roles & 50–950 ramp

primary

#3178BC

secondary

#CAA47F

accent

#9246E2

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3178BC

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

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