#3780AE#3780AE

#3780AE is a mid, moderate cyan. Relative luminance 0.193; OKLCH L 57.4% C 0.101 H 239.6°. Best body text is #000000 at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#3780AE
RGB	rgb(55, 128, 174)
HSL	hsl(203, 52%, 45%)
HSV	hsv(203, 68%, 68%)
CMYK	cmyk(68.4%, 26.4%, 0%, 31.8%)
CIE-LAB	lab(51.04, -7.64, -31.00)
CIE-LCH	lch(51.04, 31.92, 256.16°)
OKLab	oklab(57.43% -0.0511 -0.0873)
OKLCH	oklch(57.43% 0.101 239.6)
XYZ	xyz(16.9318, 19.3047, 42.8700)
Luminance	0.1931 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3780AE #AE6537

analogous

#37AEA0 #3780AE #3745AE

triadic

#3780AE #AE3780 #80AE37

tetradic

#3780AE #A037AE #AE6537 #45AE37

square

#3780AE #A037AE #AE6537 #45AE37

split-complementary

#3780AE #AE3745 #AEA037

monochromatic

#1A3C51 #285E7F #3780AE #589ECA #86B9D9

Accessibility & contrast

On white

4.32

#3780AE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.86

#3780AE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3780AE

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3780AE	#FFFFFF	#000000	##000000
##3780AE	1.00	4.32	4.86	4.86
#FFFFFF	4.32	1.00	21.00	21.00
#000000	4.86	21.00	1.00	1.00
##000000	4.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B80B0

Deuteranopia (green-blind)

#5A74AD

Tritanopia (blue-blind)

#008C90

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3780ae;
/* rgb */ color: rgb(55, 128, 174);
/* oklch */ color: oklch(57.4% 0.101 239.6);

Tailwind

colors: {
  custom: {
    50: '#7ba4c6',
    500: '#3780ae',
    950: '#000000',
  },
}

SCSS

$custom: #3780ae;
$custom-light: #7ba4c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3780ae",
  "rgb": {
    "r": 55,
    "g": 128,
    "b": 174
  },
  "hsl": {
    "h": 203.193,
    "s": 51.965,
    "l": 44.902
  },
  "oklch": {
    "l": 0.57431,
    "c": 0.10118,
    "h": 239.6
  },
  "luminance": 0.19307
}

Semantic roles & 50–950 ramp

primary

#3780AE

secondary

#C3997E

accent

#844CDB

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #3780AE

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

Preview Lab → · Contrast checker → · Palette generator →