#3778B6#3778B6

#3778B6 is a mid, moderate cyan. Relative luminance 0.176; OKLCH L 56.0% C 0.117 H 249.8°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#3778B6
RGB	rgb(55, 120, 182)
HSL	hsl(209, 54%, 46%)
HSV	hsv(209, 70%, 71%)
CMYK	cmyk(69.8%, 34.1%, 0%, 28.6%)
CIE-LAB	lab(49.03, -0.09, -38.77)
CIE-LCH	lch(49.03, 38.77, 269.87°)
OKLab	oklab(55.97% -0.0405 -0.11)
OKLCH	oklch(55.97% 0.117 249.8)
XYZ	xyz(16.7324, 17.6208, 46.7662)
Luminance	0.1762 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3778B6 #B67537

analogous

#37B6B5 #3778B6 #3739B6

triadic

#3778B6 #B63778 #78B637

tetradic

#3778B6 #B537B6 #B67537 #39B637

square

#3778B6 #B537B6 #B67537 #39B637

split-complementary

#3778B6 #B63739 #B6B537

monochromatic

#1B3A58 #295987 #3778B6 #5C96CE #8BB5DC

Accessibility & contrast

On white

4.64

#3778B6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#3778B6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3778B6

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3778B6	#FFFFFF	#000000	##FFFFFF
##3778B6	1.00	4.64	4.52	4.64
#FFFFFF	4.64	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C7BB9

Deuteranopia (green-blind)

#4A6FB5

Tritanopia (blue-blind)

#00878E

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3778b6;
/* rgb */ color: rgb(55, 120, 182);
/* oklch */ color: oklch(56.0% 0.117 249.8);

Tailwind

colors: {
  custom: {
    50: '#7d9ecc',
    500: '#3778b6',
    950: '#000000',
  },
}

SCSS

$custom: #3778b6;
$custom-light: #7d9ecc;
$custom-dark: #000000;

JSON

{
  "hex": "#3778b6",
  "rgb": {
    "r": 55,
    "g": 120,
    "b": 182
  },
  "hsl": {
    "h": 209.291,
    "s": 53.586,
    "l": 46.471
  },
  "oklch": {
    "l": 0.55972,
    "c": 0.11721,
    "h": 249.8
  },
  "luminance": 0.17623
}

Semantic roles & 50–950 ramp

primary

#3778B6

secondary

#C6A482

accent

#924BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3778B6

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

Preview Lab → · Contrast checker → · Palette generator →