#3787BD#3787BD

#3787BD is a mid, moderate cyan. Relative luminance 0.218; OKLCH L 59.9% C 0.113 H 241.8°. Best body text is #000000 at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#3787BD
RGB	rgb(55, 135, 189)
HSL	hsl(204, 55%, 48%)
HSV	hsv(204, 71%, 74%)
CMYK	cmyk(70.9%, 28.6%, 0%, 25.9%)
CIE-LAB	lab(53.83, -6.48, -35.26)
CIE-LCH	lch(53.83, 35.85, 259.59°)
OKLab	oklab(59.86% -0.0533 -0.0996)
OKLCH	oklch(59.86% 0.113 241.8)
XYZ	xyz(19.4213, 21.8121, 51.3209)
Luminance	0.2181 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3787BD #BD6D37

analogous

#37BDB0 #3787BD #3744BD

triadic

#3787BD #BD3787 #87BD37

tetradic

#3787BD #B037BD #BD6D37 #44BD37

square

#3787BD #B037BD #BD6D37 #44BD37

split-complementary

#3787BD #BD3744 #BDB037

monochromatic

#1B435E #29658E #3787BD #60A4D1 #90BFDF

Accessibility & contrast

On white

3.92

#3787BD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.36

#3787BD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3787BD

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3787BD	#FFFFFF	#000000	##000000
##3787BD	1.00	3.92	5.36	5.36
#FFFFFF	3.92	1.00	21.00	21.00
#000000	5.36	21.00	1.00	1.00
##000000	5.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E88BF

Deuteranopia (green-blind)

#5C7BBC

Tritanopia (blue-blind)

#00949A

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #3787bd;
/* rgb */ color: rgb(55, 135, 189);
/* oklch */ color: oklch(59.9% 0.113 241.8);

Tailwind

colors: {
  custom: {
    50: '#7ea9d1',
    500: '#3787bd',
    950: '#000000',
  },
}

SCSS

$custom: #3787bd;
$custom-light: #7ea9d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3787bd",
  "rgb": {
    "r": 55,
    "g": 135,
    "b": 189
  },
  "hsl": {
    "h": 204.179,
    "s": 54.918,
    "l": 47.843
  },
  "oklch": {
    "l": 0.59863,
    "c": 0.11296,
    "h": 241.8
  },
  "luminance": 0.21814
}

Semantic roles & 50–950 ramp

primary

#3787BD

secondary

#C9A186

accent

#854ADE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #3787BD

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

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