#3787BE#3787BE

#3787BE is a mid, moderate cyan. Relative luminance 0.219; OKLCH L 59.9% C 0.114 H 242.3°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#3787BE
RGB	rgb(55, 135, 190)
HSL	hsl(204, 55%, 48%)
HSV	hsv(204, 71%, 75%)
CMYK	cmyk(71.1%, 28.9%, 0%, 25.5%)
CIE-LAB	lab(53.87, -6.13, -35.75)
CIE-LCH	lch(53.87, 36.28, 260.27°)
OKLab	oklab(59.92% -0.053 -0.101)
OKLCH	oklch(59.92% 0.114 242.3)
XYZ	xyz(19.5302, 21.8557, 51.8945)
Luminance	0.2186 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3787BE #BE6E37

analogous

#37BEB1 #3787BE #3744BE

triadic

#3787BE #BE3787 #87BE37

tetradic

#3787BE #B137BE #BE6E37 #44BE37

square

#3787BE #B137BE #BE6E37 #44BE37

split-complementary

#3787BE #BE3744 #BEB137

monochromatic

#1C445F #29658F #3787BE #61A3D1 #90BFDF

Accessibility & contrast

On white

3.91

#3787BE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.37

#3787BE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3787BE

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3787BE	#FFFFFF	#000000	##000000
##3787BE	1.00	3.91	5.37	5.37
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.37	21.00	1.00	1.00
##000000	5.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E88C0

Deuteranopia (green-blind)

#5B7BBD

Tritanopia (blue-blind)

#00959A

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #3787be;
/* rgb */ color: rgb(55, 135, 190);
/* oklch */ color: oklch(59.9% 0.114 242.3);

Tailwind

colors: {
  custom: {
    50: '#7ea9d2',
    500: '#3787be',
    950: '#000000',
  },
}

SCSS

$custom: #3787be;
$custom-light: #7ea9d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3787be",
  "rgb": {
    "r": 55,
    "g": 135,
    "b": 190
  },
  "hsl": {
    "h": 204.444,
    "s": 55.102,
    "l": 48.039
  },
  "oklch": {
    "l": 0.59915,
    "c": 0.1141,
    "h": 242.3
  },
  "luminance": 0.21858
}

Semantic roles & 50–950 ramp

primary

#3787BE

secondary

#CAA287

accent

#8649DE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #3787BE

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

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