#3378B3#3378B3

#3378B3 is a mid, moderate cyan. Relative luminance 0.174; OKLCH L 55.7% C 0.115 H 247.5°. Best body text is #FFFFFF at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#3378B3
RGB	rgb(51, 120, 179)
HSL	hsl(208, 56%, 45%)
HSV	hsv(208, 72%, 70%)
CMYK	cmyk(71.5%, 33%, 0%, 29.8%)
CIE-LAB	lab(48.75, -1.77, -37.50)
CIE-LCH	lch(48.75, 37.54, 267.29°)
OKLab	oklab(55.66% -0.044 -0.1063)
OKLCH	oklch(55.66% 0.115 247.5)
XYZ	xyz(16.2153, 17.3896, 45.1410)
Luminance	0.1739 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3378B3 #B36E33

analogous

#33B3AE #3378B3 #3338B3

triadic

#3378B3 #B33378 #78B333

tetradic

#3378B3 #AE33B3 #B36E33 #38B333

square

#3378B3 #AE33B3 #B36E33 #38B333

split-complementary

#3378B3 #B33338 #B3AE33

monochromatic

#183854 #255883 #3378B3 #5596CE #84B4DC

Accessibility & contrast

On white

4.69

#3378B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.48

#3378B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3378B3

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3378B3	#FFFFFF	#000000	##FFFFFF
##3378B3	1.00	4.69	4.48	4.69
#FFFFFF	4.69	1.00	21.00	1.00
#000000	4.48	21.00	1.00	21.00
##FFFFFF	4.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D7AB6

Deuteranopia (green-blind)

#4B6EB2

Tritanopia (blue-blind)

#00868D

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3378b3;
/* rgb */ color: rgb(51, 120, 179);
/* oklch */ color: oklch(55.7% 0.115 247.5);

Tailwind

colors: {
  custom: {
    50: '#7a9eca',
    500: '#3378b3',
    950: '#000000',
  },
}

SCSS

$custom: #3378b3;
$custom-light: #7a9eca;
$custom-dark: #000000;

JSON

{
  "hex": "#3378b3",
  "rgb": {
    "r": 51,
    "g": 120,
    "b": 179
  },
  "hsl": {
    "h": 207.656,
    "s": 55.652,
    "l": 45.098
  },
  "oklch": {
    "l": 0.5566,
    "c": 0.11504,
    "h": 247.5
  },
  "luminance": 0.17391
}

Semantic roles & 50–950 ramp

primary

#3378B3

secondary

#C69E7C

accent

#8E49DF

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #3378B3

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

Preview Lab → · Contrast checker → · Palette generator →