#3378B4#3378B4

#3378B4 is a mid, moderate cyan. Relative luminance 0.174; OKLCH L 55.7% C 0.116 H 247.9°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#3378B4
RGB	rgb(51, 120, 180)
HSL	hsl(208, 56%, 45%)
HSV	hsv(208, 72%, 71%)
CMYK	cmyk(71.7%, 33.3%, 0%, 29.4%)
CIE-LAB	lab(48.80, -1.41, -38.00)
CIE-LCH	lch(48.80, 38.02, 267.87°)
OKLab	oklab(55.72% -0.0437 -0.1078)
OKLCH	oklch(55.72% 0.116 247.9)
XYZ	xyz(16.3168, 17.4302, 45.6756)
Luminance	0.1743 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3378B4 #B46F33

analogous

#33B4AF #3378B4 #3337B4

triadic

#3378B4 #B43378 #78B433

tetradic

#3378B4 #AF33B4 #B46F33 #37B433

square

#3378B4 #AF33B4 #B46F33 #37B433

split-complementary

#3378B4 #B43337 #B4AF33

monochromatic

#183855 #255884 #3378B4 #5596CF #85B4DC

Accessibility & contrast

On white

4.68

#3378B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.49

#3378B4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3378B4

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3378B4	#FFFFFF	#000000	##FFFFFF
##3378B4	1.00	4.68	4.49	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.49	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D7BB7

Deuteranopia (green-blind)

#4B6EB3

Tritanopia (blue-blind)

#00868E

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3378b4;
/* rgb */ color: rgb(51, 120, 180);
/* oklch */ color: oklch(55.7% 0.116 247.9);

Tailwind

colors: {
  custom: {
    50: '#7b9ecb',
    500: '#3378b4',
    950: '#000000',
  },
}

SCSS

$custom: #3378b4;
$custom-light: #7b9ecb;
$custom-dark: #000000;

JSON

{
  "hex": "#3378b4",
  "rgb": {
    "r": 51,
    "g": 120,
    "b": 180
  },
  "hsl": {
    "h": 207.907,
    "s": 55.844,
    "l": 45.294
  },
  "oklch": {
    "l": 0.55716,
    "c": 0.11629,
    "h": 247.9
  },
  "luminance": 0.17432
}

Semantic roles & 50–950 ramp

primary

#3378B4

secondary

#C69F7D

accent

#8F49DF

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #3378B4

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

Preview Lab → · Contrast checker → · Palette generator →