#3778BE#3778BE

#3778BE is a mid, vivid cyan. Relative luminance 0.180; OKLCH L 56.4% C 0.127 H 252.5°. Best body text is #000000 at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#3778BE
RGB	rgb(55, 120, 190)
HSL	hsl(211, 55%, 48%)
HSV	hsv(211, 71%, 75%)
CMYK	cmyk(71.1%, 36.8%, 0%, 25.5%)
CIE-LAB	lab(49.45, 2.79, -42.73)
CIE-LCH	lch(49.45, 42.82, 273.74°)
OKLab	oklab(56.43% -0.0384 -0.1215)
OKLCH	oklch(56.43% 0.127 252.5)
XYZ	xyz(17.5828, 17.9610, 51.2454)
Luminance	0.1796 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3778BE #BE7D37

analogous

#37BBBE #3778BE #3937BE

triadic

#3778BE #BE3778 #78BE37

tetradic

#3778BE #BE37BB #BE7D37 #37BE39

square

#3778BE #BE37BB #BE7D37 #37BE39

split-complementary

#3778BE #BE3937 #BBBE37

monochromatic

#1C3C5F #295A8F #3778BE #6197D1 #90B6DF

Accessibility & contrast

On white

4.57

#3778BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.59

#3778BE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3778BE

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3778BE	#FFFFFF	#000000	##000000
##3778BE	1.00	4.57	4.59	4.59
#FFFFFF	4.57	1.00	21.00	21.00
#000000	4.59	21.00	1.00	1.00
##000000	4.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#587CC1

Deuteranopia (green-blind)

#4470BD

Tritanopia (blue-blind)

#008892

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3778be;
/* rgb */ color: rgb(55, 120, 190);
/* oklch */ color: oklch(56.4% 0.127 252.5);

Tailwind

colors: {
  custom: {
    50: '#7e9ed2',
    500: '#3778be',
    950: '#000000',
  },
}

SCSS

$custom: #3778be;
$custom-light: #7e9ed2;
$custom-dark: #000000;

JSON

{
  "hex": "#3778be",
  "rgb": {
    "r": 55,
    "g": 120,
    "b": 190
  },
  "hsl": {
    "h": 211.111,
    "s": 55.102,
    "l": 48.039
  },
  "oklch": {
    "l": 0.56433,
    "c": 0.12746,
    "h": 252.5
  },
  "luminance": 0.17963
}

Semantic roles & 50–950 ramp

primary

#3778BE

secondary

#CAAA87

accent

#9749DE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3778BE

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

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