#3778B2#3778B2

#3778B2 is a mid, moderate cyan. Relative luminance 0.175; OKLCH L 55.7% C 0.112 H 248.2°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#3778B2
RGB	rgb(55, 120, 178)
HSL	hsl(208, 53%, 46%)
HSV	hsv(208, 69%, 70%)
CMYK	cmyk(69.1%, 32.6%, 0%, 30.2%)
CIE-LAB	lab(48.83, -1.51, -36.78)
CIE-LCH	lch(48.83, 36.81, 267.64°)
OKLab	oklab(55.75% -0.0416 -0.1042)
OKLCH	oklch(55.75% 0.112 248.2)
XYZ	xyz(16.3249, 17.4578, 44.6202)
Luminance	0.1746 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3778B2 #B27137

analogous

#37B2AE #3778B2 #373AB2

triadic

#3778B2 #B23778 #78B237

tetradic

#3778B2 #AE37B2 #B27137 #3AB237

square

#3778B2 #AE37B2 #B27137 #3AB237

split-complementary

#3778B2 #B2373A #B2AE37

monochromatic

#1A3954 #295883 #3778B2 #5A96CC #89B4DB

Accessibility & contrast

On white

4.67

#3778B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.49

#3778B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3778B2

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3778B2	#FFFFFF	#000000	##FFFFFF
##3778B2	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)

#5E7AB4

Deuteranopia (green-blind)

#4D6FB1

Tritanopia (blue-blind)

#00868D

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3778b2;
/* rgb */ color: rgb(55, 120, 178);
/* oklch */ color: oklch(55.7% 0.112 248.2);

Tailwind

colors: {
  custom: {
    50: '#7c9ec9',
    500: '#3778b2',
    950: '#000000',
  },
}

SCSS

$custom: #3778b2;
$custom-light: #7c9ec9;
$custom-dark: #000000;

JSON

{
  "hex": "#3778b2",
  "rgb": {
    "r": 55,
    "g": 120,
    "b": 178
  },
  "hsl": {
    "h": 208.293,
    "s": 52.79,
    "l": 45.686
  },
  "oklch": {
    "l": 0.55748,
    "c": 0.11218,
    "h": 248.2
  },
  "luminance": 0.1746
}

Semantic roles & 50–950 ramp

primary

#3778B2

secondary

#C5A080

accent

#904CDC

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3778B2

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

Preview Lab → · Contrast checker → · Palette generator →