#3F89BC#3F89BC

#3F89BC is a mid, moderate cyan. Relative luminance 0.226; OKLCH L 60.6% C 0.107 H 241.7°. Best body text is #000000 at 5.52:1 contrast (WCAG AA passes).

Color values

HEX	#3F89BC
RGB	rgb(63, 137, 188)
HSL	hsl(204, 50%, 49%)
HSV	hsv(204, 66%, 74%)
CMYK	cmyk(66.5%, 27.1%, 0%, 26.3%)
CIE-LAB	lab(54.63, -6.72, -33.41)
CIE-LCH	lch(54.63, 34.07, 258.63°)
OKLab	oklab(60.56% -0.0507 -0.0941)
OKLCH	oklch(60.56% 0.107 241.7)
XYZ	xyz(20.0692, 22.5768, 50.8673)
Luminance	0.2258 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F89BC #BC723F

analogous

#3FBCB1 #3F89BC #3F4BBC

triadic

#3F89BC #BC3F89 #89BC3F

tetradic

#3F89BC #B13FBC #BC723F #4BBC3F

square

#3F89BC #B13FBC #BC723F #4BBC3F

split-complementary

#3F89BC #BC3F4B #BCB13F

monochromatic

#204660 #30688E #3F89BC #6BA5CD #99C1DD

Accessibility & contrast

On white

3.81

#3F89BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.52

#3F89BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F89BC

5.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F89BC	#FFFFFF	#000000	##000000
##3F89BC	1.00	3.81	5.52	5.52
#FFFFFF	3.81	1.00	21.00	21.00
#000000	5.52	21.00	1.00	1.00
##000000	5.52	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#728ABE

Deuteranopia (green-blind)

#617DBB

Tritanopia (blue-blind)

#00969B

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #3f89bc;
/* rgb */ color: rgb(63, 137, 188);
/* oklch */ color: oklch(60.6% 0.107 241.7);

Tailwind

colors: {
  custom: {
    50: '#81abd0',
    500: '#3f89bc',
    950: '#000000',
  },
}

SCSS

$custom: #3f89bc;
$custom-light: #81abd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f89bc",
  "rgb": {
    "r": 63,
    "g": 137,
    "b": 188
  },
  "hsl": {
    "h": 204.48,
    "s": 49.801,
    "l": 49.216
  },
  "oklch": {
    "l": 0.60558,
    "c": 0.1069,
    "h": 241.7
  },
  "luminance": 0.22579
}

Semantic roles & 50–950 ramp

primary

#3F89BC

secondary

#C9A68E

accent

#874ED9

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #3F89BC

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

Preview Lab → · Contrast checker → · Palette generator →