#3F87B7#3F87B7

#3F87B7 is a mid, moderate cyan. Relative luminance 0.218; OKLCH L 59.8% C 0.103 H 240.7°. Best body text is #000000 at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#3F87B7
RGB	rgb(63, 135, 183)
HSL	hsl(204, 49%, 48%)
HSV	hsv(204, 66%, 72%)
CMYK	cmyk(65.6%, 26.2%, 0%, 28.2%)
CIE-LAB	lab(53.82, -7.26, -31.83)
CIE-LCH	lch(53.82, 32.64, 257.15°)
OKLab	oklab(59.84% -0.0503 -0.0895)
OKLCH	oklch(59.84% 0.103 240.7)
XYZ	xyz(19.2579, 21.8016, 47.9838)
Luminance	0.2180 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F87B7 #B76F3F

analogous

#3FB7AB #3F87B7 #3F4BB7

triadic

#3F87B7 #B73F87 #87B73F

tetradic

#3F87B7 #AB3FB7 #B76F3F #4BB73F

square

#3F87B7 #AB3FB7 #B76F3F #4BB73F

split-complementary

#3F87B7 #B73F4B #B7AB3F

monochromatic

#20445C #2F6589 #3F87B7 #68A3CB #96BFDB

Accessibility & contrast

On white

3.92

#3F87B7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.36

#3F87B7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F87B7

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F87B7	#FFFFFF	#000000	##000000
##3F87B7	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)

#7187B9

Deuteranopia (green-blind)

#617BB6

Tritanopia (blue-blind)

#009397

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #3f87b7;
/* rgb */ color: rgb(63, 135, 183);
/* oklch */ color: oklch(59.8% 0.103 240.7);

Tailwind

colors: {
  custom: {
    50: '#80a9cc',
    500: '#3f87b7',
    950: '#000000',
  },
}

SCSS

$custom: #3f87b7;
$custom-light: #80a9cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f87b7",
  "rgb": {
    "r": 63,
    "g": 135,
    "b": 183
  },
  "hsl": {
    "h": 204,
    "s": 48.78,
    "l": 48.235
  },
  "oklch": {
    "l": 0.59837,
    "c": 0.1027,
    "h": 240.7
  },
  "luminance": 0.21804
}

Semantic roles & 50–950 ramp

primary

#3F87B7

secondary

#C6A38B

accent

#864FD8

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3F87B7

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

Preview Lab → · Contrast checker → · Palette generator →