#3F87BF#3F87BF

#3F87BF is a mid, moderate cyan. Relative luminance 0.221; OKLCH L 60.2% C 0.112 H 244.8°. Best body text is #000000 at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#3F87BF
RGB	rgb(63, 135, 191)
HSL	hsl(206, 50%, 50%)
HSV	hsv(206, 67%, 75%)
CMYK	cmyk(67%, 29.3%, 0%, 25.1%)
CIE-LAB	lab(54.18, -4.54, -35.83)
CIE-LCH	lch(54.18, 36.11, 262.78°)
OKLab	oklab(60.25% -0.0477 -0.1011)
OKLCH	oklch(60.25% 0.112 244.8)
XYZ	xyz(20.1143, 22.1442, 52.4943)
Luminance	0.2215 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F87BF #BF773F

analogous

#3FBFB7 #3F87BF #3F47BF

triadic

#3F87BF #BF3F87 #87BF3F

tetradic

#3F87BF #B73FBF #BF773F #47BF3F

square

#3F87BF #B73FBF #BF773F #47BF3F

split-complementary

#3F87BF #BF3F47 #BFB73F

monochromatic

#214663 #306691 #3F87BF #6DA4CF #9BC0DE

Accessibility & contrast

On white

3.87

#3F87BF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.43

#3F87BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F87BF

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F87BF	#FFFFFF	#000000	##000000
##3F87BF	1.00	3.87	5.43	5.43
#FFFFFF	3.87	1.00	21.00	21.00
#000000	5.43	21.00	1.00	1.00
##000000	5.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E88C1

Deuteranopia (green-blind)

#5C7CBE

Tritanopia (blue-blind)

#00959B

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #3f87bf;
/* rgb */ color: rgb(63, 135, 191);
/* oklch */ color: oklch(60.2% 0.112 244.8);

Tailwind

colors: {
  custom: {
    50: '#82a9d2',
    500: '#3f87bf',
    950: '#000000',
  },
}

SCSS

$custom: #3f87bf;
$custom-light: #82a9d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f87bf",
  "rgb": {
    "r": 63,
    "g": 135,
    "b": 191
  },
  "hsl": {
    "h": 206.25,
    "s": 50.394,
    "l": 49.804
  },
  "oklch": {
    "l": 0.60245,
    "c": 0.11182,
    "h": 244.8
  },
  "luminance": 0.22146
}

Semantic roles & 50–950 ramp

primary

#3F87BF

secondary

#CAA990

accent

#8B4EDA

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C0F14

muted

#7D7F82

Preview Lab

Preview with #3F87BF

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

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