#3F91DE#3F91DE

#3F91DE is a light, vivid cyan. Relative luminance 0.266; OKLCH L 64.2% C 0.140 H 249.8°. Best body text is #000000 at 6.32:1 contrast (WCAG AA passes).

Color values

HEX	#3F91DE
RGB	rgb(63, 145, 222)
HSL	hsl(209, 71%, 56%)
HSV	hsv(209, 72%, 87%)
CMYK	cmyk(71.6%, 34.7%, 0%, 12.9%)
CIE-LAB	lab(58.58, 0.39, -46.36)
CIE-LCH	lch(58.58, 46.37, 270.49°)
OKLab	oklab(64.2% -0.0486 -0.1317)
OKLCH	oklch(64.2% 0.14 249.8)
XYZ	xyz(25.3552, 26.5787, 72.8870)
Luminance	0.2658 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F91DE #DE8C3F

analogous

#3FDEDC #3F91DE #3F41DE

triadic

#3F91DE #DE3F91 #91DE3F

tetradic

#3F91DE #DC3FDE #DE8C3F #41DE3F

square

#3F91DE #DC3FDE #DE8C3F #41DE3F

split-complementary

#3F91DE #DE3F41 #DEDC3F

monochromatic

#18538B #2172BF #3F91DE #73AFE7 #A7CDF0

Accessibility & contrast

On white

3.32

#3F91DE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.32

#3F91DE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F91DE

6.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F91DE	#FFFFFF	#000000	##000000
##3F91DE	1.00	3.32	6.32	6.32
#FFFFFF	3.32	1.00	21.00	21.00
#000000	6.32	21.00	1.00	1.00
##000000	6.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E95E1

Deuteranopia (green-blind)

#5786DC

Tritanopia (blue-blind)

#00A3AD

Achromatopsia (no color)

#8D8D8D

Design tokens & code

CSS

--color: #3f91de;
/* rgb */ color: rgb(63, 145, 222);
/* oklch */ color: oklch(64.2% 0.140 249.8);

Tailwind

colors: {
  custom: {
    50: '#87b0e8',
    500: '#3f91de',
    950: '#000000',
  },
}

SCSS

$custom: #3f91de;
$custom-light: #87b0e8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f91de",
  "rgb": {
    "r": 63,
    "g": 145,
    "b": 222
  },
  "hsl": {
    "h": 209.057,
    "s": 70.667,
    "l": 55.882
  },
  "oklch": {
    "l": 0.64201,
    "c": 0.14041,
    "h": 249.8
  },
  "luminance": 0.26581
}

Semantic roles & 50–950 ramp

primary

#3F91DE

secondary

#DDBB9B

accent

#913AED

background

#F9FAFE

surface

#F1F4FD

border

#CBCED5

text

#0D1016

muted

#7E7F84

Preview Lab

Preview with #3F91DE

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

Preview Lab → · Contrast checker → · Palette generator →