#3F83CA#3F83CA

#3F83CA is a mid, vivid cyan. Relative luminance 0.216; OKLCH L 59.9% C 0.129 H 251.7°. Best body text is #000000 at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#3F83CA
RGB	rgb(63, 131, 202)
HSL	hsl(211, 57%, 52%)
HSV	hsv(211, 69%, 79%)
CMYK	cmyk(68.8%, 35.1%, 0%, 20.8%)
CIE-LAB	lab(53.55, 1.64, -43.08)
CIE-LCH	lch(53.55, 43.11, 272.19°)
OKLab	oklab(59.92% -0.0405 -0.1223)
OKLCH	oklch(59.92% 0.129 251.7)
XYZ	xyz(20.8229, 21.5514, 58.9281)
Luminance	0.2155 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F83CA #CA863F

analogous

#3FC9CA #3F83CA #403FCA

triadic

#3F83CA #CA3F83 #83CA3F

tetradic

#3F83CA #CA3FC9 #CA863F #3FCA40

square

#3F83CA #CA3FC9 #CA863F #3FCA40

split-complementary

#3F83CA #CA403F #C9CA3F

monochromatic

#1F4670 #2C65A0 #3F83CA #6FA2D7 #9FC1E4

Accessibility & contrast

On white

3.95

#3F83CA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.31

#3F83CA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F83CA

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F83CA	#FFFFFF	#000000	##000000
##3F83CA	1.00	3.95	5.31	5.31
#FFFFFF	3.95	1.00	21.00	21.00
#000000	5.31	21.00	1.00	1.00
##000000	5.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6387CD

Deuteranopia (green-blind)

#4F7AC9

Tritanopia (blue-blind)

#00949D

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3f83ca;
/* rgb */ color: rgb(63, 131, 202);
/* oklch */ color: oklch(59.9% 0.129 251.7);

Tailwind

colors: {
  custom: {
    50: '#83a6da',
    500: '#3f83ca',
    950: '#000000',
  },
}

SCSS

$custom: #3f83ca;
$custom-light: #83a6da;
$custom-dark: #000000;

JSON

{
  "hex": "#3f83ca",
  "rgb": {
    "r": 63,
    "g": 131,
    "b": 202
  },
  "hsl": {
    "h": 210.647,
    "s": 56.735,
    "l": 51.961
  },
  "oklch": {
    "l": 0.59923,
    "c": 0.12885,
    "h": 251.7
  },
  "luminance": 0.21554
}

Semantic roles & 50–950 ramp

primary

#3F83CA

secondary

#D1B394

accent

#9648E0

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3F83CA

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

Preview Lab → · Contrast checker → · Palette generator →