#3378B9#3378B9

#3378B9 is a mid, vivid cyan. Relative luminance 0.176; OKLCH L 56.0% C 0.123 H 249.8°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#3378B9
RGB	rgb(51, 120, 185)
HSL	hsl(209, 57%, 46%)
HSV	hsv(209, 72%, 73%)
CMYK	cmyk(72.4%, 35.1%, 0%, 27.5%)
CIE-LAB	lab(49.05, 0.40, -40.48)
CIE-LCH	lch(49.05, 40.48, 270.56°)
OKLab	oklab(56% -0.0423 -0.115)
OKLCH	oklch(56% 0.123 249.8)
XYZ	xyz(16.8354, 17.6377, 48.4067)
Luminance	0.1764 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3378B9 #B97433

analogous

#33B9B7 #3378B9 #3335B9

triadic

#3378B9 #B93378 #78B933

tetradic

#3378B9 #B733B9 #B97433 #35B933

square

#3378B9 #B733B9 #B97433 #35B933

split-complementary

#3378B9 #B93335 #B9B733

monochromatic

#193A59 #265989 #3378B9 #5896D1 #88B4DE

Accessibility & contrast

On white

4.64

#3378B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#3378B9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3378B9

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3378B9	#FFFFFF	#000000	##FFFFFF
##3378B9	1.00	4.64	4.53	4.64
#FFFFFF	4.64	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A7BBC

Deuteranopia (green-blind)

#476FB8

Tritanopia (blue-blind)

#008790

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3378b9;
/* rgb */ color: rgb(51, 120, 185);
/* oklch */ color: oklch(56.0% 0.123 249.8);

Tailwind

colors: {
  custom: {
    50: '#7b9ece',
    500: '#3378b9',
    950: '#000000',
  },
}

SCSS

$custom: #3378b9;
$custom-light: #7b9ece;
$custom-dark: #000000;

JSON

{
  "hex": "#3378b9",
  "rgb": {
    "r": 51,
    "g": 120,
    "b": 185
  },
  "hsl": {
    "h": 209.104,
    "s": 56.78,
    "l": 46.275
  },
  "oklch": {
    "l": 0.56001,
    "c": 0.12255,
    "h": 249.8
  },
  "luminance": 0.1764
}

Semantic roles & 50–950 ramp

primary

#3378B9

secondary

#C8A380

accent

#9248E0

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3378B9

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

Preview Lab → · Contrast checker → · Palette generator →