#3780B2#3780B2

#3780B2 is a mid, moderate cyan. Relative luminance 0.195; OKLCH L 57.6% C 0.106 H 241.9°. Best body text is #000000 at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#3780B2
RGB	rgb(55, 128, 178)
HSL	hsl(204, 53%, 46%)
HSV	hsv(204, 69%, 70%)
CMYK	cmyk(69.1%, 28.1%, 0%, 30.2%)
CIE-LAB	lab(51.22, -6.25, -33.02)
CIE-LCH	lch(51.22, 33.61, 259.28°)
OKLab	oklab(57.64% -0.0498 -0.0932)
OKLCH	oklch(57.64% 0.106 241.9)
XYZ	xyz(17.3275, 19.4631, 44.9544)
Luminance	0.1946 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3780B2 #B26937

analogous

#37B2A6 #3780B2 #3742B2

triadic

#3780B2 #B23780 #80B237

tetradic

#3780B2 #A637B2 #B26937 #42B237

square

#3780B2 #A637B2 #B26937 #42B237

split-complementary

#3780B2 #B23742 #B2A637

monochromatic

#1A3D54 #295E83 #3780B2 #5A9ECC #89B9DB

Accessibility & contrast

On white

4.29

#3780B2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.89

#3780B2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3780B2

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3780B2	#FFFFFF	#000000	##000000
##3780B2	1.00	4.29	4.89	4.89
#FFFFFF	4.29	1.00	21.00	21.00
#000000	4.89	21.00	1.00	1.00
##000000	4.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6981B4

Deuteranopia (green-blind)

#5875B1

Tritanopia (blue-blind)

#008C91

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3780b2;
/* rgb */ color: rgb(55, 128, 178);
/* oklch */ color: oklch(57.6% 0.106 241.9);

Tailwind

colors: {
  custom: {
    50: '#7ca4c9',
    500: '#3780b2',
    950: '#000000',
  },
}

SCSS

$custom: #3780b2;
$custom-light: #7ca4c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3780b2",
  "rgb": {
    "r": 55,
    "g": 128,
    "b": 178
  },
  "hsl": {
    "h": 204.39,
    "s": 52.79,
    "l": 45.686
  },
  "oklch": {
    "l": 0.57636,
    "c": 0.10565,
    "h": 241.9
  },
  "luminance": 0.19465
}

Semantic roles & 50–950 ramp

primary

#3780B2

secondary

#C59C80

accent

#864CDC

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3780B2

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

Preview Lab → · Contrast checker → · Palette generator →