#3F89CC#3F89CC

#3F89CC is a mid, vivid cyan. Relative luminance 0.233; OKLCH L 61.4% C 0.126 H 248.6°. Best body text is #000000 at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#3F89CC
RGB	rgb(63, 137, 204)
HSL	hsl(209, 58%, 52%)
HSV	hsv(209, 69%, 80%)
CMYK	cmyk(69.1%, 32.8%, 0%, 20%)
CIE-LAB	lab(55.39, -1.21, -41.31)
CIE-LCH	lch(55.39, 41.33, 268.32°)
OKLab	oklab(61.4% -0.0458 -0.1171)
OKLCH	oklch(61.4% 0.126 248.6)
XYZ	xyz(21.8906, 23.3054, 60.4597)
Luminance	0.2331 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F89CC #CC823F

analogous

#3FCCC9 #3F89CC #3F42CC

triadic

#3F89CC #CC3F89 #89CC3F

tetradic

#3F89CC #C93FCC #CC823F #42CC3F

square

#3F89CC #C93FCC #CC823F #42CC3F

split-complementary

#3F89CC #CC3F42 #CCC93F

monochromatic

#1E4A72 #2B6AA3 #3F89CC #6FA7D9 #A0C4E6

Accessibility & contrast

On white

3.71

#3F89CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.66

#3F89CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F89CC

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F89CC	#FFFFFF	#000000	##000000
##3F89CC	1.00	3.71	5.66	5.66
#FFFFFF	3.71	1.00	21.00	21.00
#000000	5.66	21.00	1.00	1.00
##000000	5.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B8CCF

Deuteranopia (green-blind)

#577FCB

Tritanopia (blue-blind)

#0099A1

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #3f89cc;
/* rgb */ color: rgb(63, 137, 204);
/* oklch */ color: oklch(61.4% 0.126 248.6);

Tailwind

colors: {
  custom: {
    50: '#84abdc',
    500: '#3f89cc',
    950: '#000000',
  },
}

SCSS

$custom: #3f89cc;
$custom-light: #84abdc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f89cc",
  "rgb": {
    "r": 63,
    "g": 137,
    "b": 204
  },
  "hsl": {
    "h": 208.511,
    "s": 58.025,
    "l": 52.353
  },
  "oklch": {
    "l": 0.61398,
    "c": 0.12573,
    "h": 248.6
  },
  "luminance": 0.23308
}

Semantic roles & 50–950 ramp

primary

#3F89CC

secondary

#D2B295

accent

#9047E1

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #3F89CC

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

Preview Lab → · Contrast checker → · Palette generator →