#3780BD#3780BD

#3780BD is a mid, moderate cyan. Relative luminance 0.199; OKLCH L 58.2% C 0.119 H 247.0°. Best body text is #000000 at 4.99:1 contrast (WCAG AA passes).

Color values

HEX	#3780BD
RGB	rgb(55, 128, 189)
HSL	hsl(207, 55%, 48%)
HSV	hsv(207, 71%, 74%)
CMYK	cmyk(70.9%, 32.3%, 0%, 25.9%)
CIE-LAB	lab(51.75, -2.38, -38.52)
CIE-LCH	lch(51.75, 38.59, 266.46°)
OKLab	oklab(58.22% -0.0464 -0.1091)
OKLCH	oklch(58.22% 0.119 247)
XYZ	xyz(18.4765, 19.9227, 51.0059)
Luminance	0.1993 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3780BD #BD7437

analogous

#37BDB7 #3780BD #373DBD

triadic

#3780BD #BD3780 #80BD37

tetradic

#3780BD #B737BD #BD7437 #3DBD37

square

#3780BD #B737BD #BD7437 #3DBD37

split-complementary

#3780BD #BD373D #BDB737

monochromatic

#1B405E #29608E #3780BD #609ED1 #90BBDF

Accessibility & contrast

On white

4.21

#3780BD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.99

#3780BD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3780BD

4.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3780BD	#FFFFFF	#000000	##000000
##3780BD	1.00	4.21	4.99	4.99
#FFFFFF	4.21	1.00	21.00	21.00
#000000	4.99	21.00	1.00	1.00
##000000	4.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6482C0

Deuteranopia (green-blind)

#5276BC

Tritanopia (blue-blind)

#008F96

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3780bd;
/* rgb */ color: rgb(55, 128, 189);
/* oklch */ color: oklch(58.2% 0.119 247.0);

Tailwind

colors: {
  custom: {
    50: '#7ea4d1',
    500: '#3780bd',
    950: '#000000',
  },
}

SCSS

$custom: #3780bd;
$custom-light: #7ea4d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3780bd",
  "rgb": {
    "r": 55,
    "g": 128,
    "b": 189
  },
  "hsl": {
    "h": 207.313,
    "s": 54.918,
    "l": 47.843
  },
  "oklch": {
    "l": 0.58222,
    "c": 0.1186,
    "h": 247
  },
  "luminance": 0.19925
}

Semantic roles & 50–950 ramp

primary

#3780BD

secondary

#C9A586

accent

#8D4ADE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #3780BD

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

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