#3F87BD#3F87BD

#3F87BD is a mid, moderate cyan. Relative luminance 0.221; OKLCH L 60.1% C 0.109 H 243.8°. Best body text is #000000 at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#3F87BD
RGB	rgb(63, 135, 189)
HSL	hsl(206, 50%, 49%)
HSV	hsv(206, 67%, 74%)
CMYK	cmyk(66.7%, 28.6%, 0%, 25.9%)
CIE-LAB	lab(54.09, -5.22, -34.83)
CIE-LCH	lch(54.09, 35.22, 261.47°)
OKLab	oklab(60.14% -0.0483 -0.0982)
OKLCH	oklch(60.14% 0.109 243.8)
XYZ	xyz(19.8957, 22.0568, 51.3431)
Luminance	0.2206 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F87BD #BD753F

analogous

#3FBDB4 #3F87BD #3F48BD

triadic

#3F87BD #BD3F87 #87BD3F

tetradic

#3F87BD #B43FBD #BD753F #48BD3F

square

#3F87BD #B43FBD #BD753F #48BD3F

split-complementary

#3F87BD #BD3F48 #BDB43F

monochromatic

#204561 #30668F #3F87BD #6BA4CE #99C0DD

Accessibility & contrast

On white

3.88

#3F87BD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.41

#3F87BD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F87BD

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F87BD	#FFFFFF	#000000	##000000
##3F87BD	1.00	3.88	5.41	5.41
#FFFFFF	3.88	1.00	21.00	21.00
#000000	5.41	21.00	1.00	1.00
##000000	5.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F88BF

Deuteranopia (green-blind)

#5E7CBC

Tritanopia (blue-blind)

#00949A

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #3f87bd;
/* rgb */ color: rgb(63, 135, 189);
/* oklch */ color: oklch(60.1% 0.109 243.8);

Tailwind

colors: {
  custom: {
    50: '#81a9d1',
    500: '#3f87bd',
    950: '#000000',
  },
}

SCSS

$custom: #3f87bd;
$custom-light: #81a9d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f87bd",
  "rgb": {
    "r": 63,
    "g": 135,
    "b": 189
  },
  "hsl": {
    "h": 205.714,
    "s": 50,
    "l": 49.412
  },
  "oklch": {
    "l": 0.60141,
    "c": 0.10949,
    "h": 243.8
  },
  "luminance": 0.22059
}

Semantic roles & 50–950 ramp

primary

#3F87BD

secondary

#C9A88F

accent

#8A4EDA

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #3F87BD

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

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