#3378BC#3378BC

#3378BC is a mid, vivid cyan. Relative luminance 0.178; OKLCH L 56.2% C 0.126 H 250.8°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#3378BC
RGB	rgb(51, 120, 188)
HSL	hsl(210, 57%, 47%)
HSV	hsv(210, 73%, 74%)
CMYK	cmyk(72.9%, 36.2%, 0%, 26.3%)
CIE-LAB	lab(49.21, 1.49, -41.96)
CIE-LCH	lch(49.21, 41.99, 272.03°)
OKLab	oklab(56.18% -0.0415 -0.1194)
OKLCH	oklch(56.18% 0.126 250.8)
XYZ	xyz(17.1554, 17.7657, 50.0922)
Luminance	0.1777 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3378BC #BC7733

analogous

#33BCBC #3378BC #3334BC

triadic

#3378BC #BC3378 #78BC33

tetradic

#3378BC #BC33BC #BC7733 #34BC33

square

#3378BC #BC33BC #BC7733 #34BC33

split-complementary

#3378BC #BC3334 #BCBC33

monochromatic

#193B5C #26598C #3378BC #5A97D2 #8AB5DF

Accessibility & contrast

On white

4.61

#3378BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#3378BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3378BC

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3378BC	#FFFFFF	#000000	##FFFFFF
##3378BC	1.00	4.61	4.55	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#597CBF

Deuteranopia (green-blind)

#456FBB

Tritanopia (blue-blind)

#008891

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3378bc;
/* rgb */ color: rgb(51, 120, 188);
/* oklch */ color: oklch(56.2% 0.126 250.8);

Tailwind

colors: {
  custom: {
    50: '#7c9ed0',
    500: '#3378bc',
    950: '#000000',
  },
}

SCSS

$custom: #3378bc;
$custom-light: #7c9ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#3378bc",
  "rgb": {
    "r": 51,
    "g": 120,
    "b": 188
  },
  "hsl": {
    "h": 209.781,
    "s": 57.322,
    "l": 46.863
  },
  "oklch": {
    "l": 0.56175,
    "c": 0.12636,
    "h": 250.8
  },
  "luminance": 0.17768
}

Semantic roles & 50–950 ramp

primary

#3378BC

secondary

#C9A581

accent

#9347E1

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3378BC

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

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