#3787B8#3787B8

#3787B8 is a mid, moderate cyan. Relative luminance 0.216; OKLCH L 59.6% C 0.107 H 239.2°. Best body text is #000000 at 5.32:1 contrast (WCAG AA passes).

Color values

HEX	#3787B8
RGB	rgb(55, 135, 184)
HSL	hsl(203, 54%, 47%)
HSV	hsv(203, 70%, 72%)
CMYK	cmyk(70.1%, 26.6%, 0%, 27.8%)
CIE-LAB	lab(53.60, -8.22, -32.76)
CIE-LCH	lch(53.60, 33.77, 255.92°)
OKLab	oklab(59.61% -0.055 -0.0923)
OKLCH	oklch(59.61% 0.107 239.2)
XYZ	xyz(18.8879, 21.5988, 48.5117)
Luminance	0.2160 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3787B8 #B86837

analogous

#37B8A9 #3787B8 #3746B8

triadic

#3787B8 #B83787 #87B837

tetradic

#3787B8 #A937B8 #B86837 #46B837

square

#3787B8 #A937B8 #B86837 #46B837

split-complementary

#3787B8 #B83746 #B8A937

monochromatic

#1B425A #296489 #3787B8 #5DA4CF #8DBEDD

Accessibility & contrast

On white

3.95

#3787B8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.32

#3787B8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3787B8

5.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3787B8	#FFFFFF	#000000	##000000
##3787B8	1.00	3.95	5.32	5.32
#FFFFFF	3.95	1.00	21.00	21.00
#000000	5.32	21.00	1.00	1.00
##000000	5.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7087BA

Deuteranopia (green-blind)

#5F7BB7

Tritanopia (blue-blind)

#009398

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3787b8;
/* rgb */ color: rgb(55, 135, 184);
/* oklch */ color: oklch(59.6% 0.107 239.2);

Tailwind

colors: {
  custom: {
    50: '#7da9cd',
    500: '#3787b8',
    950: '#000000',
  },
}

SCSS

$custom: #3787b8;
$custom-light: #7da9cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3787b8",
  "rgb": {
    "r": 55,
    "g": 135,
    "b": 184
  },
  "hsl": {
    "h": 202.791,
    "s": 53.975,
    "l": 46.863
  },
  "oklch": {
    "l": 0.59606,
    "c": 0.10746,
    "h": 239.2
  },
  "luminance": 0.21601
}

Semantic roles & 50–950 ramp

primary

#3787B8

secondary

#C79D84

accent

#824ADD

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3787B8

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

Preview Lab → · Contrast checker → · Palette generator →