#3378B5#3378B5

#3378B5 is a mid, moderate cyan. Relative luminance 0.175; OKLCH L 55.8% C 0.118 H 248.3°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#3378B5
RGB	rgb(51, 120, 181)
HSL	hsl(208, 56%, 45%)
HSV	hsv(208, 72%, 71%)
CMYK	cmyk(71.8%, 33.7%, 0%, 29%)
CIE-LAB	lab(48.85, -1.05, -38.50)
CIE-LCH	lch(48.85, 38.51, 268.44°)
OKLab	oklab(55.77% -0.0434 -0.1092)
OKLCH	oklch(55.77% 0.118 248.3)
XYZ	xyz(16.4191, 17.4711, 46.2140)
Luminance	0.1747 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3378B5 #B57033

analogous

#33B5B1 #3378B5 #3337B5

triadic

#3378B5 #B53378 #78B533

tetradic

#3378B5 #B133B5 #B57033 #37B533

square

#3378B5 #B133B5 #B57033 #37B533

split-complementary

#3378B5 #B53337 #B5B133

monochromatic

#183956 #265885 #3378B5 #5696CF #86B4DD

Accessibility & contrast

On white

4.67

#3378B5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.49

#3378B5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3378B5

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3378B5	#FFFFFF	#000000	##FFFFFF
##3378B5	1.00	4.67	4.49	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.49	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C7BB8

Deuteranopia (green-blind)

#4A6FB4

Tritanopia (blue-blind)

#00878E

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3378b5;
/* rgb */ color: rgb(51, 120, 181);
/* oklch */ color: oklch(55.8% 0.118 248.3);

Tailwind

colors: {
  custom: {
    50: '#7b9ecb',
    500: '#3378b5',
    950: '#000000',
  },
}

SCSS

$custom: #3378b5;
$custom-light: #7b9ecb;
$custom-dark: #000000;

JSON

{
  "hex": "#3378b5",
  "rgb": {
    "r": 51,
    "g": 120,
    "b": 181
  },
  "hsl": {
    "h": 208.154,
    "s": 56.034,
    "l": 45.49
  },
  "oklch": {
    "l": 0.55772,
    "c": 0.11752,
    "h": 248.3
  },
  "luminance": 0.17473
}

Semantic roles & 50–950 ramp

primary

#3378B5

secondary

#C6A07D

accent

#8F48DF

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #3378B5

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

Preview Lab → · Contrast checker → · Palette generator →