#3F8BBD#3F8BBD

#3F8BBD is a mid, moderate cyan. Relative luminance 0.232; OKLCH L 61.1% C 0.107 H 240.5°. Best body text is #000000 at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#3F8BBD
RGB	rgb(63, 139, 189)
HSL	hsl(204, 50%, 49%)
HSV	hsv(204, 67%, 74%)
CMYK	cmyk(66.7%, 26.5%, 0%, 25.9%)
CIE-LAB	lab(55.27, -7.53, -32.98)
CIE-LCH	lch(55.27, 33.83, 257.14°)
OKLab	oklab(61.08% -0.0525 -0.0929)
OKLCH	oklch(61.08% 0.107 240.5)
XYZ	xyz(20.4643, 23.1940, 51.5326)
Luminance	0.2320 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F8BBD #BD713F

analogous

#3FBDB0 #3F8BBD #3F4CBD

triadic

#3F8BBD #BD3F8B #8BBD3F

tetradic

#3F8BBD #B03FBD #BD713F #4CBD3F

square

#3F8BBD #B03FBD #BD713F #4CBD3F

split-complementary

#3F8BBD #BD3F4C #BDB03F

monochromatic

#204761 #30698F #3F8BBD #6BA7CE #99C2DD

Accessibility & contrast

On white

3.72

#3F8BBD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.64

#3F8BBD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F8BBD

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F8BBD	#FFFFFF	#000000	##000000
##3F8BBD	1.00	3.72	5.64	5.64
#FFFFFF	3.72	1.00	21.00	21.00
#000000	5.64	21.00	1.00	1.00
##000000	5.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#748BBF

Deuteranopia (green-blind)

#637FBC

Tritanopia (blue-blind)

#00979C

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #3f8bbd;
/* rgb */ color: rgb(63, 139, 189);
/* oklch */ color: oklch(61.1% 0.107 240.5);

Tailwind

colors: {
  custom: {
    50: '#81acd1',
    500: '#3f8bbd',
    950: '#000000',
  },
}

SCSS

$custom: #3f8bbd;
$custom-light: #81acd1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f8bbd",
  "rgb": {
    "r": 63,
    "g": 139,
    "b": 189
  },
  "hsl": {
    "h": 203.81,
    "s": 50,
    "l": 49.412
  },
  "oklch": {
    "l": 0.61078,
    "c": 0.10666,
    "h": 240.5
  },
  "luminance": 0.23196
}

Semantic roles & 50–950 ramp

primary

#3F8BBD

secondary

#C9A68F

accent

#864EDA

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #3F8BBD

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

Preview Lab → · Contrast checker → · Palette generator →