#3F99F1#3F99F1

#3F99F1 is a light, vivid cyan. Relative luminance 0.302; OKLCH L 67.0% C 0.156 H 250.9°. Best body text is #000000 at 7.04:1 contrast (WCAG AA passes).

Color values

HEX	#3F99F1
RGB	rgb(63, 153, 241)
HSL	hsl(210, 86%, 60%)
HSV	hsv(210, 74%, 95%)
CMYK	cmyk(73.9%, 36.5%, 0%, 5.5%)
CIE-LAB	lab(61.81, 2.40, -51.77)
CIE-LCH	lch(61.81, 51.82, 272.66°)
OKLab	oklab(67.05% -0.051 -0.1474)
OKLCH	oklch(67.05% 0.156 250.9)
XYZ	xyz(29.3123, 30.1867, 87.4838)
Luminance	0.3019 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F99F1 #F1973F

analogous

#3FF1F0 #3F99F1 #3F40F1

triadic

#3F99F1 #F13F99 #99F13F

tetradic

#3F99F1 #F03FF1 #F1973F #40F13F

square

#3F99F1 #F03FF1 #F1973F #40F13F

split-complementary

#3F99F1 #F13F40 #F1F03F

monochromatic

#0C5CA9 #117BE2 #3F99F1 #78B7F5 #B1D6F9

Accessibility & contrast

On white

2.98

#3F99F1 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.04

#3F99F1 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #3F99F1

7.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F99F1	#FFFFFF	#000000	##000000
##3F99F1	1.00	2.98	7.04	7.04
#FFFFFF	2.98	1.00	21.00	21.00
#000000	7.04	21.00	1.00	1.00
##000000	7.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#709EF5

Deuteranopia (green-blind)

#558EEF

Tritanopia (blue-blind)

#00AEB9

Achromatopsia (no color)

#959595

Design tokens & code

CSS

--color: #3f99f1;
/* rgb */ color: rgb(63, 153, 241);
/* oklch */ color: oklch(67.0% 0.156 250.9);

Tailwind

colors: {
  custom: {
    50: '#8ab6f6',
    500: '#3f99f1',
    950: '#000000',
  },
}

SCSS

$custom: #3f99f1;
$custom-light: #8ab6f6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f99f1",
  "rgb": {
    "r": 63,
    "g": 153,
    "b": 241
  },
  "hsl": {
    "h": 209.663,
    "s": 86.408,
    "l": 59.608
  },
  "oklch": {
    "l": 0.6705,
    "c": 0.15599,
    "h": 250.9
  },
  "luminance": 0.3019
}

Semantic roles & 50–950 ramp

primary

#3F99F1

secondary

#E8C6A3

accent

#932BFD

background

#F9FBFF

surface

#F2F6FE

border

#CCD0D6

text

#0D1117

muted

#7E8085

Preview Lab

Preview with #3F99F1

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

Preview Lab → · Contrast checker → · Palette generator →