#3784B9#3784B9

#3784B9 is a mid, moderate cyan. Relative luminance 0.208; OKLCH L 58.9% C 0.111 H 242.2°. Best body text is #000000 at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#3784B9
RGB	rgb(55, 132, 185)
HSL	hsl(204, 54%, 47%)
HSV	hsv(204, 70%, 73%)
CMYK	cmyk(70.3%, 28.6%, 0%, 27.5%)
CIE-LAB	lab(52.75, -6.14, -34.66)
CIE-LCH	lch(52.75, 35.20, 259.96°)
OKLab	oklab(58.95% -0.0516 -0.0979)
OKLCH	oklch(58.95% 0.111 242.2)
XYZ	xyz(18.5804, 20.8155, 48.9281)
Luminance	0.2082 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3784B9 #B96C37

analogous

#37B9AD #3784B9 #3743B9

triadic

#3784B9 #B93784 #84B937

tetradic

#3784B9 #AD37B9 #B96C37 #43B937

square

#3784B9 #AD37B9 #B96C37 #43B937

split-complementary

#3784B9 #B93743 #B9AD37

monochromatic

#1B415B #29628A #3784B9 #5EA1CF #8DBDDD

Accessibility & contrast

On white

4.07

#3784B9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.16

#3784B9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3784B9

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3784B9	#FFFFFF	#000000	##000000
##3784B9	1.00	4.07	5.16	5.16
#FFFFFF	4.07	1.00	21.00	21.00
#000000	5.16	21.00	1.00	1.00
##000000	5.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C85BB

Deuteranopia (green-blind)

#5A78B8

Tritanopia (blue-blind)

#009196

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #3784b9;
/* rgb */ color: rgb(55, 132, 185);
/* oklch */ color: oklch(58.9% 0.111 242.2);

Tailwind

colors: {
  custom: {
    50: '#7da7ce',
    500: '#3784b9',
    950: '#000000',
  },
}

SCSS

$custom: #3784b9;
$custom-light: #7da7ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3784b9",
  "rgb": {
    "r": 55,
    "g": 132,
    "b": 185
  },
  "hsl": {
    "h": 204.462,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.58947,
    "c": 0.11065,
    "h": 242.2
  },
  "luminance": 0.20818
}

Semantic roles & 50–950 ramp

primary

#3784B9

secondary

#C8A084

accent

#864ADE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3784B9

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

Preview Lab → · Contrast checker → · Palette generator →