#3780AA#3780AA

#3780AA is a mid, moderate cyan. Relative luminance 0.192; OKLCH L 57.2% C 0.097 H 237.2°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#3780AA
RGB	rgb(55, 128, 170)
HSL	hsl(202, 51%, 44%)
HSV	hsv(202, 68%, 67%)
CMYK	cmyk(67.6%, 24.7%, 0%, 33.3%)
CIE-LAB	lab(50.86, -9.01, -28.96)
CIE-LCH	lch(50.86, 30.33, 252.71°)
OKLab	oklab(57.23% -0.0525 -0.0814)
OKLCH	oklch(57.23% 0.097 237.2)
XYZ	xyz(16.5476, 19.1511, 40.8469)
Luminance	0.1915 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3780AA #AA6137

analogous

#37AA9B #3780AA #3747AA

triadic

#3780AA #AA3780 #80AA37

tetradic

#3780AA #9B37AA #AA6137 #47AA37

square

#3780AA #9B37AA #AA6137 #47AA37

split-complementary

#3780AA #AA3747 #AA9B37

monochromatic

#193A4E #285D7C #3780AA #569FC8 #84B9D7

Accessibility & contrast

On white

4.35

#3780AA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#3780AA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3780AA

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3780AA	#FFFFFF	#000000	##000000
##3780AA	1.00	4.35	4.83	4.83
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.83	21.00	1.00	1.00
##000000	4.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C7FAC

Deuteranopia (green-blind)

#5C74A9

Tritanopia (blue-blind)

#008B8E

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3780aa;
/* rgb */ color: rgb(55, 128, 170);
/* oklch */ color: oklch(57.2% 0.097 237.2);

Tailwind

colors: {
  custom: {
    50: '#7ba4c3',
    500: '#3780aa',
    950: '#000000',
  },
}

SCSS

$custom: #3780aa;
$custom-light: #7ba4c3;
$custom-dark: #000000;

JSON

{
  "hex": "#3780aa",
  "rgb": {
    "r": 55,
    "g": 128,
    "b": 170
  },
  "hsl": {
    "h": 201.913,
    "s": 51.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.5723,
    "c": 0.09688,
    "h": 237.2
  },
  "luminance": 0.19153
}

Semantic roles & 50–950 ramp

primary

#3780AA

secondary

#C1957C

accent

#814DDB

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0A0F12

muted

#7C7F81

Preview Lab

Preview with #3780AA

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

Preview Lab → · Contrast checker → · Palette generator →