#3F89BB#3F89BB

#3F89BB is a mid, moderate cyan. Relative luminance 0.225; OKLCH L 60.5% C 0.106 H 241.2°. Best body text is #000000 at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#3F89BB
RGB	rgb(63, 137, 187)
HSL	hsl(204, 50%, 49%)
HSV	hsv(204, 66%, 73%)
CMYK	cmyk(66.3%, 26.7%, 0%, 26.7%)
CIE-LAB	lab(54.59, -7.06, -32.90)
CIE-LCH	lch(54.59, 33.65, 257.90°)
OKLab	oklab(60.51% -0.051 -0.0927)
OKLCH	oklch(60.51% 0.106 241.2)
XYZ	xyz(19.9618, 22.5339, 50.3015)
Luminance	0.2254 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F89BB #BB713F

analogous

#3FBBAF #3F89BB #3F4BBB

triadic

#3F89BB #BB3F89 #89BB3F

tetradic

#3F89BB #AF3FBB #BB713F #4BBB3F

square

#3F89BB #AF3FBB #BB713F #4BBB3F

split-complementary

#3F89BB #BB3F4B #BBAF3F

monochromatic

#20465F #30678D #3F89BB #6AA5CD #98C1DC

Accessibility & contrast

On white

3.81

#3F89BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.51

#3F89BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F89BB

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F89BB	#FFFFFF	#000000	##000000
##3F89BB	1.00	3.81	5.51	5.51
#FFFFFF	3.81	1.00	21.00	21.00
#000000	5.51	21.00	1.00	1.00
##000000	5.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7289BD

Deuteranopia (green-blind)

#617DBA

Tritanopia (blue-blind)

#00959A

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #3f89bb;
/* rgb */ color: rgb(63, 137, 187);
/* oklch */ color: oklch(60.5% 0.106 241.2);

Tailwind

colors: {
  custom: {
    50: '#81abcf',
    500: '#3f89bb',
    950: '#000000',
  },
}

SCSS

$custom: #3f89bb;
$custom-light: #81abcf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f89bb",
  "rgb": {
    "r": 63,
    "g": 137,
    "b": 187
  },
  "hsl": {
    "h": 204.194,
    "s": 49.6,
    "l": 49.02
  },
  "oklch": {
    "l": 0.60508,
    "c": 0.10579,
    "h": 241.2
  },
  "luminance": 0.22536
}

Semantic roles & 50–950 ramp

primary

#3F89BB

secondary

#C8A58E

accent

#874FD9

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #3F89BB

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

Preview Lab → · Contrast checker → · Palette generator →