#3F91CD#3F91CD

#3F91CD is a light, vivid cyan. Relative luminance 0.257; OKLCH L 63.3% C 0.120 H 243.6°. Best body text is #000000 at 6.14:1 contrast (WCAG AA passes).

Color values

HEX	#3F91CD
RGB	rgb(63, 145, 205)
HSL	hsl(205, 59%, 53%)
HSV	hsv(205, 69%, 80%)
CMYK	cmyk(69.3%, 29.3%, 0%, 19.6%)
CIE-LAB	lab(57.76, -5.51, -38.13)
CIE-LCH	lch(57.76, 38.53, 261.78°)
OKLab	oklab(63.29% -0.0534 -0.1077)
OKLCH	oklch(63.29% 0.12 243.6)
XYZ	xyz(23.1905, 25.7128, 61.4867)
Luminance	0.2571 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F91CD #CD7B3F

analogous

#3FCDC2 #3F91CD #3F4ACD

triadic

#3F91CD #CD3F91 #91CD3F

tetradic

#3F91CD #C23FCD #CD7B3F #4ACD3F

square

#3F91CD #C23FCD #CD7B3F #4ACD3F

split-complementary

#3F91CD #CD3F4A #CDC23F

monochromatic

#1E4F74 #2B71A4 #3F91CD #70ADDA #A0C9E6

Accessibility & contrast

On white

3.42

#3F91CD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.14

#3F91CD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F91CD

6.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F91CD	#FFFFFF	#000000	##000000
##3F91CD	1.00	3.42	6.14	6.14
#FFFFFF	3.42	1.00	21.00	21.00
#000000	6.14	21.00	1.00	1.00
##000000	6.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7692D0

Deuteranopia (green-blind)

#6285CC

Tritanopia (blue-blind)

#00A0A6

Achromatopsia (no color)

#8B8B8B

Design tokens & code

CSS

--color: #3f91cd;
/* rgb */ color: rgb(63, 145, 205);
/* oklch */ color: oklch(63.3% 0.120 243.6);

Tailwind

colors: {
  custom: {
    50: '#84b1dc',
    500: '#3f91cd',
    950: '#000000',
  },
}

SCSS

$custom: #3f91cd;
$custom-light: #84b1dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f91cd",
  "rgb": {
    "r": 63,
    "g": 145,
    "b": 205
  },
  "hsl": {
    "h": 205.352,
    "s": 58.678,
    "l": 52.549
  },
  "oklch": {
    "l": 0.63288,
    "c": 0.12027,
    "h": 243.6
  },
  "luminance": 0.25715
}

Semantic roles & 50–950 ramp

primary

#3F91CD

secondary

#D3AF95

accent

#8846E2

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #3F91CD

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

Preview Lab → · Contrast checker → · Palette generator →