#3780B7#3780B7

#3780B7 is a mid, moderate cyan. Relative luminance 0.197; OKLCH L 57.9% C 0.111 H 244.3°. Best body text is #000000 at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#3780B7
RGB	rgb(55, 128, 183)
HSL	hsl(206, 54%, 47%)
HSV	hsv(206, 70%, 72%)
CMYK	cmyk(69.9%, 30.1%, 0%, 28.2%)
CIE-LAB	lab(51.46, -4.50, -35.53)
CIE-LCH	lch(51.46, 35.82, 262.78°)
OKLab	oklab(57.9% -0.0482 -0.1004)
OKLCH	oklch(57.9% 0.111 244.3)
XYZ	xyz(17.8387, 19.6675, 47.6466)
Luminance	0.1967 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3780B7 #B76E37

analogous

#37B7AE #3780B7 #3740B7

triadic

#3780B7 #B73780 #80B737

tetradic

#3780B7 #AE37B7 #B76E37 #40B737

square

#3780B7 #AE37B7 #B76E37 #40B737

split-complementary

#3780B7 #B73740 #B7AE37

monochromatic

#1B3E59 #295F88 #3780B7 #5D9ECE #8CBADC

Accessibility & contrast

On white

4.26

#3780B7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.93

#3780B7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3780B7

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3780B7	#FFFFFF	#000000	##000000
##3780B7	1.00	4.26	4.93	4.93
#FFFFFF	4.26	1.00	21.00	21.00
#000000	4.93	21.00	1.00	1.00
##000000	4.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6781B9

Deuteranopia (green-blind)

#5575B6

Tritanopia (blue-blind)

#008D93

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3780b7;
/* rgb */ color: rgb(55, 128, 183);
/* oklch */ color: oklch(57.9% 0.111 244.3);

Tailwind

colors: {
  custom: {
    50: '#7da4cd',
    500: '#3780b7',
    950: '#000000',
  },
}

SCSS

$custom: #3780b7;
$custom-light: #7da4cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3780b7",
  "rgb": {
    "r": 55,
    "g": 128,
    "b": 183
  },
  "hsl": {
    "h": 205.781,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.57898,
    "c": 0.11143,
    "h": 244.3
  },
  "luminance": 0.19669
}

Semantic roles & 50–950 ramp

primary

#3780B7

secondary

#C7A083

accent

#8A4BDD

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3780B7

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

Preview Lab → · Contrast checker → · Palette generator →