#3F91ED#3F91ED

#3F91ED is a light, vivid cyan. Relative luminance 0.274; OKLCH L 65.1% C 0.159 H 253.6°. Best body text is #000000 at 6.48:1 contrast (WCAG AA passes).

Color values

HEX	#3F91ED
RGB	rgb(63, 145, 237)
HSL	hsl(212, 83%, 59%)
HSV	hsv(212, 73%, 93%)
CMYK	cmyk(73.4%, 38.8%, 0%, 7.1%)
CIE-LAB	lab(59.36, 5.69, -53.46)
CIE-LCH	lch(59.36, 53.76, 276.08°)
OKLab	oklab(65.06% -0.0449 -0.1525)
OKLCH	oklch(65.06% 0.159 253.6)
XYZ	xyz(27.4557, 27.4189, 83.9497)
Luminance	0.2742 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F91ED #ED9B3F

analogous

#3FE8ED #3F91ED #443FED

triadic

#3F91ED #ED3F91 #91ED3F

tetradic

#3F91ED #ED3FE8 #ED9B3F #3FED44

square

#3F91ED #ED3FE8 #ED9B3F #3FED44

split-complementary

#3F91ED #ED443F #E8ED3F

monochromatic

#0F55A2 #1472DA #3F91ED #77B1F2 #AFD1F7

Accessibility & contrast

On white

3.24

#3F91ED on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.48

#3F91ED on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F91ED

6.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F91ED	#FFFFFF	#000000	##000000
##3F91ED	1.00	3.24	6.48	6.48
#FFFFFF	3.24	1.00	21.00	21.00
#000000	6.48	21.00	1.00	1.00
##000000	6.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6698F1

Deuteranopia (green-blind)

#4A88EB

Tritanopia (blue-blind)

#00A7B3

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #3f91ed;
/* rgb */ color: rgb(63, 145, 237);
/* oklch */ color: oklch(65.1% 0.159 253.6);

Tailwind

colors: {
  custom: {
    50: '#8ab0f3',
    500: '#3f91ed',
    950: '#000000',
  },
}

SCSS

$custom: #3f91ed;
$custom-light: #8ab0f3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f91ed",
  "rgb": {
    "r": 63,
    "g": 145,
    "b": 237
  },
  "hsl": {
    "h": 211.724,
    "s": 82.857,
    "l": 58.824
  },
  "oklch": {
    "l": 0.65063,
    "c": 0.159,
    "h": 253.6
  },
  "luminance": 0.27422
}

Semantic roles & 50–950 ramp

primary

#3F91ED

secondary

#E6C6A2

accent

#9A2FF9

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0D1017

muted

#7E7F85

Preview Lab

Preview with #3F91ED

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

Preview Lab → · Contrast checker → · Palette generator →