#3787B9#3787B9

#3787B9 is a mid, moderate cyan. Relative luminance 0.216; OKLCH L 59.7% C 0.109 H 239.8°. Best body text is #000000 at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#3787B9
RGB	rgb(55, 135, 185)
HSL	hsl(203, 54%, 47%)
HSV	hsv(203, 70%, 73%)
CMYK	cmyk(70.3%, 27%, 0%, 27.5%)
CIE-LAB	lab(53.64, -7.87, -33.26)
CIE-LCH	lch(53.64, 34.18, 256.68°)
OKLab	oklab(59.66% -0.0546 -0.0938)
OKLCH	oklch(59.66% 0.109 239.8)
XYZ	xyz(18.9931, 21.6409, 49.0657)
Luminance	0.2164 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3787B9 #B96937

analogous

#37B9AA #3787B9 #3746B9

triadic

#3787B9 #B93787 #87B937

tetradic

#3787B9 #AA37B9 #B96937 #46B937

square

#3787B9 #AA37B9 #B96937 #46B937

split-complementary

#3787B9 #B93746 #B9AA37

monochromatic

#1B425B #29658A #3787B9 #5EA4CF #8DBEDD

Accessibility & contrast

On white

3.94

#3787B9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.33

#3787B9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3787B9

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3787B9	#FFFFFF	#000000	##000000
##3787B9	1.00	3.94	5.33	5.33
#FFFFFF	3.94	1.00	21.00	21.00
#000000	5.33	21.00	1.00	1.00
##000000	5.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7087BB

Deuteranopia (green-blind)

#5E7BB8

Tritanopia (blue-blind)

#009498

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3787b9;
/* rgb */ color: rgb(55, 135, 185);
/* oklch */ color: oklch(59.7% 0.109 239.8);

Tailwind

colors: {
  custom: {
    50: '#7da9ce',
    500: '#3787b9',
    950: '#000000',
  },
}

SCSS

$custom: #3787b9;
$custom-light: #7da9ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3787b9",
  "rgb": {
    "r": 55,
    "g": 135,
    "b": 185
  },
  "hsl": {
    "h": 203.077,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.59657,
    "c": 0.10854,
    "h": 239.8
  },
  "luminance": 0.21643
}

Semantic roles & 50–950 ramp

primary

#3787B9

secondary

#C89E84

accent

#834ADE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3787B9

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

Preview Lab → · Contrast checker → · Palette generator →