#3378B8#3378B8

#3378B8 is a mid, vivid cyan. Relative luminance 0.176; OKLCH L 55.9% C 0.121 H 249.5°. Best body text is #FFFFFF at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#3378B8
RGB	rgb(51, 120, 184)
HSL	hsl(209, 57%, 46%)
HSV	hsv(209, 72%, 72%)
CMYK	cmyk(72.3%, 34.8%, 0%, 27.8%)
CIE-LAB	lab(49.00, 0.03, -39.99)
CIE-LCH	lch(49.00, 39.99, 270.05°)
OKLab	oklab(55.94% -0.0425 -0.1136)
OKLCH	oklch(55.94% 0.121 249.5)
XYZ	xyz(16.7302, 17.5956, 47.8527)
Luminance	0.1760 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3378B8 #B87333

analogous

#33B8B5 #3378B8 #3335B8

triadic

#3378B8 #B83378 #78B833

tetradic

#3378B8 #B533B8 #B87333 #35B833

square

#3378B8 #B533B8 #B87333 #35B833

split-complementary

#3378B8 #B83335 #B8B533

monochromatic

#183958 #265988 #3378B8 #5896D1 #88B4DE

Accessibility & contrast

On white

4.65

#3378B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#3378B8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3378B8

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3378B8	#FFFFFF	#000000	##FFFFFF
##3378B8	1.00	4.65	4.52	4.65
#FFFFFF	4.65	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B7BBB

Deuteranopia (green-blind)

#486FB7

Tritanopia (blue-blind)

#00878F

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3378b8;
/* rgb */ color: rgb(51, 120, 184);
/* oklch */ color: oklch(55.9% 0.121 249.5);

Tailwind

colors: {
  custom: {
    50: '#7b9ecd',
    500: '#3378b8',
    950: '#000000',
  },
}

SCSS

$custom: #3378b8;
$custom-light: #7b9ecd;
$custom-dark: #000000;

JSON

{
  "hex": "#3378b8",
  "rgb": {
    "r": 51,
    "g": 120,
    "b": 184
  },
  "hsl": {
    "h": 208.872,
    "s": 56.596,
    "l": 46.078
  },
  "oklch": {
    "l": 0.55943,
    "c": 0.12129,
    "h": 249.5
  },
  "luminance": 0.17597
}

Semantic roles & 50–950 ramp

primary

#3378B8

secondary

#C8A27F

accent

#9148E0

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3378B8

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

Preview Lab → · Contrast checker → · Palette generator →