#3778B7#3778B7

#3778B7 is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 56.0% C 0.118 H 250.2°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#3778B7
RGB	rgb(55, 120, 183)
HSL	hsl(210, 54%, 47%)
HSV	hsv(210, 70%, 72%)
CMYK	cmyk(69.9%, 34.4%, 0%, 28.2%)
CIE-LAB	lab(49.08, 0.27, -39.27)
CIE-LCH	lch(49.08, 39.27, 270.39°)
OKLab	oklab(56.03% -0.0402 -0.1114)
OKLCH	oklch(56.03% 0.118 250.2)
XYZ	xyz(16.8361, 17.6623, 47.3124)
Luminance	0.1766 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3778B7 #B77637

analogous

#37B7B6 #3778B7 #3738B7

triadic

#3778B7 #B73778 #78B737

tetradic

#3778B7 #B637B7 #B77637 #38B737

square

#3778B7 #B637B7 #B77637 #38B737

split-complementary

#3778B7 #B73738 #B7B637

monochromatic

#1B3A59 #295988 #3778B7 #5D96CE #8CB5DC

Accessibility & contrast

On white

4.63

#3778B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#3778B7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3778B7

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3778B7	#FFFFFF	#000000	##FFFFFF
##3778B7	1.00	4.63	4.53	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C7BBA

Deuteranopia (green-blind)

#4A6FB6

Tritanopia (blue-blind)

#00878F

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3778b7;
/* rgb */ color: rgb(55, 120, 183);
/* oklch */ color: oklch(56.0% 0.118 250.2);

Tailwind

colors: {
  custom: {
    50: '#7d9ecd',
    500: '#3778b7',
    950: '#000000',
  },
}

SCSS

$custom: #3778b7;
$custom-light: #7d9ecd;
$custom-dark: #000000;

JSON

{
  "hex": "#3778b7",
  "rgb": {
    "r": 55,
    "g": 120,
    "b": 183
  },
  "hsl": {
    "h": 209.531,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.56028,
    "c": 0.11848,
    "h": 250.2
  },
  "luminance": 0.17664
}

Semantic roles & 50–950 ramp

primary

#3778B7

secondary

#C7A483

accent

#934BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3778B7

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

Preview Lab → · Contrast checker → · Palette generator →