#3F87D9#3F87D9

#3F87D9 is a mid, vivid cyan. Relative luminance 0.234; OKLCH L 61.7% C 0.144 H 253.6°. Best body text is #000000 at 5.68:1 contrast (WCAG AA passes).

Color values

HEX	#3F87D9
RGB	rgb(63, 135, 217)
HSL	hsl(212, 67%, 55%)
HSV	hsv(212, 71%, 85%)
CMYK	cmyk(71%, 37.8%, 0%, 14.9%)
CIE-LAB	lab(55.47, 4.55, -48.49)
CIE-LCH	lch(55.47, 48.71, 275.36°)
OKLab	oklab(61.68% -0.0405 -0.1381)
OKLCH	oklch(61.68% 0.144 253.6)
XYZ	xyz(23.2336, 23.3919, 68.9228)
Luminance	0.2339 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F87D9 #D9913F

analogous

#3FD4D9 #3F87D9 #443FD9

triadic

#3F87D9 #D93F87 #87D93F

tetradic

#3F87D9 #D93FD4 #D9913F #3FD944

square

#3F87D9 #D93FD4 #D9913F #3FD944

split-complementary

#3F87D9 #D9443F #D4D93F

monochromatic

#1A4B84 #2469B7 #3F87D9 #72A7E3 #A5C7ED

Accessibility & contrast

On white

3.70

#3F87D9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.68

#3F87D9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F87D9

5.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F87D9	#FFFFFF	#000000	##000000
##3F87D9	1.00	3.70	5.68	5.68
#FFFFFF	3.70	1.00	21.00	21.00
#000000	5.68	21.00	1.00	1.00
##000000	5.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#618DDC

Deuteranopia (green-blind)

#4A7ED7

Tritanopia (blue-blind)

#009AA5

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #3f87d9;
/* rgb */ color: rgb(63, 135, 217);
/* oklch */ color: oklch(61.7% 0.144 253.6);

Tailwind

colors: {
  custom: {
    50: '#86a9e5',
    500: '#3f87d9',
    950: '#000000',
  },
}

SCSS

$custom: #3f87d9;
$custom-light: #86a9e5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f87d9",
  "rgb": {
    "r": 63,
    "g": 135,
    "b": 217
  },
  "hsl": {
    "h": 211.948,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.61684,
    "c": 0.14394,
    "h": 253.6
  },
  "luminance": 0.23394
}

Semantic roles & 50–950 ramp

primary

#3F87D9

secondary

#DABC9A

accent

#993EEA

background

#F8FAFE

surface

#F0F4FC

border

#CBCED5

text

#0D0F16

muted

#7D7F84

Preview Lab

Preview with #3F87D9

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

Preview Lab → · Contrast checker → · Palette generator →