#3F91C9#3F91C9

#3F91C9 is a light, moderate cyan. Relative luminance 0.255; OKLCH L 63.1% C 0.116 H 241.8°. Best body text is #000000 at 6.10:1 contrast (WCAG AA passes).

Color values

HEX	#3F91C9
RGB	rgb(63, 145, 201)
HSL	hsl(204, 56%, 52%)
HSV	hsv(204, 69%, 79%)
CMYK	cmyk(68.7%, 27.9%, 0%, 21.2%)
CIE-LAB	lab(57.58, -6.88, -36.17)
CIE-LCH	lch(57.58, 36.82, 259.23°)
OKLab	oklab(63.08% -0.0547 -0.102)
OKLCH	oklch(63.08% 0.116 241.8)
XYZ	xyz(22.7139, 25.5222, 58.9762)
Luminance	0.2552 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F91C9 #C9773F

analogous

#3FC9BC #3F91C9 #3F4CC9

triadic

#3F91C9 #C93F91 #91C93F

tetradic

#3F91C9 #BC3FC9 #C9773F #4CC93F

square

#3F91C9 #BC3FC9 #C9773F #4CC93F

split-complementary

#3F91C9 #C93F4C #C9BC3F

monochromatic

#1F4E6F #2D709E #3F91C9 #6FACD6 #9FC8E4

Accessibility & contrast

On white

3.44

#3F91C9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.10

#3F91C9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F91C9

6.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F91C9	#FFFFFF	#000000	##000000
##3F91C9	1.00	3.44	6.10	6.10
#FFFFFF	3.44	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)

#7792CC

Deuteranopia (green-blind)

#6584C8

Tritanopia (blue-blind)

#009FA4

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #3f91c9;
/* rgb */ color: rgb(63, 145, 201);
/* oklch */ color: oklch(63.1% 0.116 241.8);

Tailwind

colors: {
  custom: {
    50: '#83b1d9',
    500: '#3f91c9',
    950: '#000000',
  },
}

SCSS

$custom: #3f91c9;
$custom-light: #83b1d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f91c9",
  "rgb": {
    "r": 63,
    "g": 145,
    "b": 201
  },
  "hsl": {
    "h": 204.348,
    "s": 56.098,
    "l": 51.765
  },
  "oklch": {
    "l": 0.63083,
    "c": 0.11578,
    "h": 241.8
  },
  "luminance": 0.25525
}

Semantic roles & 50–950 ramp

primary

#3F91C9

secondary

#D0AC94

accent

#8648DF

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C1014

muted

#7D7F83

Preview Lab

Preview with #3F91C9

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

Preview Lab → · Contrast checker → · Palette generator →