#3F9CE0#3F9CE0

#3F9CE0 is a light, vivid cyan. Relative luminance 0.302; OKLCH L 66.8% C 0.133 H 244.1°. Best body text is #000000 at 7.04:1 contrast (WCAG AA passes).

Color values

HEX	#3F9CE0
RGB	rgb(63, 156, 224)
HSL	hsl(205, 72%, 56%)
HSV	hsv(205, 72%, 88%)
CMYK	cmyk(71.9%, 30.4%, 0%, 12.2%)
CIE-LAB	lab(61.84, -5.25, -42.35)
CIE-LCH	lch(61.84, 42.67, 262.93°)
OKLab	oklab(66.8% -0.0583 -0.1199)
OKLCH	oklch(66.8% 0.133 244.1)
XYZ	xyz(27.3877, 30.2124, 74.8947)
Luminance	0.3022 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F9CE0 #E0833F

analogous

#3FE0D4 #3F9CE0 #3F4CE0

triadic

#3F9CE0 #E03F9C #9CE03F

tetradic

#3F9CE0 #D43FE0 #E0833F #4CE03F

square

#3F9CE0 #D43FE0 #E0833F #4CE03F

split-complementary

#3F9CE0 #E03F4C #E0D43F

monochromatic

#175C8E #1F7EC2 #3F9CE0 #74B7E9 #A8D2F1

Accessibility & contrast

On white

2.98

#3F9CE0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.04

#3F9CE0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #3F9CE0

7.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F9CE0	#FFFFFF	#000000	##000000
##3F9CE0	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)

#7D9EE3

Deuteranopia (green-blind)

#678FDF

Tritanopia (blue-blind)

#00ADB4

Achromatopsia (no color)

#959595

Design tokens & code

CSS

--color: #3f9ce0;
/* rgb */ color: rgb(63, 156, 224);
/* oklch */ color: oklch(66.8% 0.133 244.1);

Tailwind

colors: {
  custom: {
    50: '#87b9ea',
    500: '#3f9ce0',
    950: '#000000',
  },
}

SCSS

$custom: #3f9ce0;
$custom-light: #87b9ea;
$custom-dark: #000000;

JSON

{
  "hex": "#3f9ce0",
  "rgb": {
    "r": 63,
    "g": 156,
    "b": 224
  },
  "hsl": {
    "h": 205.342,
    "s": 72.197,
    "l": 56.275
  },
  "oklch": {
    "l": 0.66795,
    "c": 0.1333,
    "h": 244.1
  },
  "luminance": 0.30216
}

Semantic roles & 50–950 ramp

primary

#3F9CE0

secondary

#DFB89C

accent

#8639EF

background

#F9FBFE

surface

#F1F6FD

border

#CBD0D5

text

#0D1116

muted

#7E8084

Preview Lab

Preview with #3F9CE0

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

Preview Lab → · Contrast checker → · Palette generator →