#3F91C8#3F91C8

#3F91C8 is a light, moderate cyan. Relative luminance 0.255; OKLCH L 63.0% C 0.115 H 241.3°. Best body text is #000000 at 6.10:1 contrast (WCAG AA passes).

Color values

HEX	#3F91C8
RGB	rgb(63, 145, 200)
HSL	hsl(204, 55%, 52%)
HSV	hsv(204, 69%, 78%)
CMYK	cmyk(68.5%, 27.5%, 0%, 21.6%)
CIE-LAB	lab(57.54, -7.22, -35.67)
CIE-LCH	lch(57.54, 36.40, 258.56°)
OKLab	oklab(63.03% -0.055 -0.1006)
OKLCH	oklch(63.03% 0.115 241.3)
XYZ	xyz(22.5966, 25.4753, 58.3587)
Luminance	0.2548 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F91C8 #C8763F

analogous

#3FC8BB #3F91C8 #3F4DC8

triadic

#3F91C8 #C83F91 #91C83F

tetradic

#3F91C8 #BB3FC8 #C8763F #4DC83F

square

#3F91C8 #BB3FC8 #C8763F #4DC83F

split-complementary

#3F91C8 #C83F4D #C8BB3F

monochromatic

#1F4E6D #2D709D #3F91C8 #6FACD6 #9EC8E3

Accessibility & contrast

On white

3.45

#3F91C8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.10

#3F91C8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F91C8

6.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F91C8	#FFFFFF	#000000	##000000
##3F91C8	1.00	3.45	6.10	6.10
#FFFFFF	3.45	1.00	21.00	21.00
#000000	6.10	21.00	1.00	1.00
##000000	6.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7892CA

Deuteranopia (green-blind)

#6584C7

Tritanopia (blue-blind)

#009FA4

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #3f91c8;
/* rgb */ color: rgb(63, 145, 200);
/* oklch */ color: oklch(63.0% 0.115 241.3);

Tailwind

colors: {
  custom: {
    50: '#83b1d9',
    500: '#3f91c8',
    950: '#000000',
  },
}

SCSS

$custom: #3f91c8;
$custom-light: #83b1d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f91c8",
  "rgb": {
    "r": 63,
    "g": 145,
    "b": 200
  },
  "hsl": {
    "h": 204.088,
    "s": 55.466,
    "l": 51.569
  },
  "oklch": {
    "l": 0.63033,
    "c": 0.11467,
    "h": 241.3
  },
  "luminance": 0.25478
}

Semantic roles & 50–950 ramp

primary

#3F91C8

secondary

#D0AB93

accent

#8549DF

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C1014

muted

#7D7F83

Preview Lab

Preview with #3F91C8

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

Preview Lab → · Contrast checker → · Palette generator →