#3F8EB3#3F8EB3

#3F8EB3 is a mid, moderate cyan. Relative luminance 0.237; OKLCH L 61.3% C 0.095 H 231.5°. Best body text is #000000 at 5.73:1 contrast (WCAG AA passes).

Color values

HEX	#3F8EB3
RGB	rgb(63, 142, 179)
HSL	hsl(199, 48%, 47%)
HSV	hsv(199, 65%, 70%)
CMYK	cmyk(64.8%, 20.7%, 0%, 29.8%)
CIE-LAB	lab(55.74, -12.55, -26.55)
CIE-LCH	lch(55.74, 29.37, 244.71°)
OKLab	oklab(61.31% -0.0591 -0.0743)
OKLCH	oklch(61.31% 0.095 231.5)
XYZ	xyz(19.8564, 23.6554, 46.1586)
Luminance	0.2366 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F8EB3 #B3643F

analogous

#3FB39E #3F8EB3 #3F54B3

triadic

#3F8EB3 #B33F8E #8EB33F

tetradic

#3F8EB3 #9E3FB3 #B3643F #54B33F

square

#3F8EB3 #9E3FB3 #B3643F #54B33F

split-complementary

#3F8EB3 #B33F54 #B39E3F

monochromatic

#1F4658 #2F6A86 #3F8EB3 #66AAC9 #93C3D9

Accessibility & contrast

On white

3.66

#3F8EB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.73

#3F8EB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F8EB3

5.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F8EB3	#FFFFFF	#000000	##000000
##3F8EB3	1.00	3.66	5.73	5.73
#FFFFFF	3.66	1.00	21.00	21.00
#000000	5.73	21.00	1.00	1.00
##000000	5.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C8CB5

Deuteranopia (green-blind)

#6B80B2

Tritanopia (blue-blind)

#00989A

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #3f8eb3;
/* rgb */ color: rgb(63, 142, 179);
/* oklch */ color: oklch(61.3% 0.095 231.5);

Tailwind

colors: {
  custom: {
    50: '#80afca',
    500: '#3f8eb3',
    950: '#000000',
  },
}

SCSS

$custom: #3f8eb3;
$custom-light: #80afca;
$custom-dark: #000000;

JSON

{
  "hex": "#3f8eb3",
  "rgb": {
    "r": 63,
    "g": 142,
    "b": 179
  },
  "hsl": {
    "h": 199.138,
    "s": 47.934,
    "l": 47.451
  },
  "oklch": {
    "l": 0.6131,
    "c": 0.09497,
    "h": 231.5
  },
  "luminance": 0.23657
}

Semantic roles & 50–950 ramp

primary

#3F8EB3

secondary

#C49C89

accent

#7B50D8

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3F8EB3

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

Preview Lab → · Contrast checker → · Palette generator →