#3F83B2#3F83B2

#3F83B2 is a mid, moderate cyan. Relative luminance 0.205; OKLCH L 58.6% C 0.100 H 241.5°. Best body text is #000000 at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#3F83B2
RGB	rgb(63, 131, 178)
HSL	hsl(205, 48%, 47%)
HSV	hsv(205, 65%, 70%)
CMYK	cmyk(64.6%, 26.4%, 0%, 30.2%)
CIE-LAB	lab(52.40, -6.64, -31.16)
CIE-LCH	lch(52.40, 31.86, 257.97°)
OKLab	oklab(58.64% -0.0477 -0.0877)
OKLCH	oklch(58.64% 0.1 241.5)
XYZ	xyz(18.1990, 20.5019, 45.1090)
Luminance	0.2050 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F83B2 #B26E3F

analogous

#3FB2A8 #3F83B2 #3F49B2

triadic

#3F83B2 #B23F83 #83B23F

tetradic

#3F83B2 #A83FB2 #B26E3F #49B23F

square

#3F83B2 #A83FB2 #B26E3F #49B23F

split-complementary

#3F83B2 #B23F49 #B2A83F

monochromatic

#1F4058 #2F6285 #3F83B2 #66A0C9 #93BCD9

Accessibility & contrast

On white

4.12

#3F83B2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.10

#3F83B2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F83B2

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F83B2	#FFFFFF	#000000	##000000
##3F83B2	1.00	4.12	5.10	5.10
#FFFFFF	4.12	1.00	21.00	21.00
#000000	5.10	21.00	1.00	1.00
##000000	5.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E83B4

Deuteranopia (green-blind)

#5E78B1

Tritanopia (blue-blind)

#008F93

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #3f83b2;
/* rgb */ color: rgb(63, 131, 178);
/* oklch */ color: oklch(58.6% 0.100 241.5);

Tailwind

colors: {
  custom: {
    50: '#80a6c9',
    500: '#3f83b2',
    950: '#000000',
  },
}

SCSS

$custom: #3f83b2;
$custom-light: #80a6c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f83b2",
  "rgb": {
    "r": 63,
    "g": 131,
    "b": 178
  },
  "hsl": {
    "h": 204.522,
    "s": 47.718,
    "l": 47.255
  },
  "oklch": {
    "l": 0.58643,
    "c": 0.09979,
    "h": 241.5
  },
  "luminance": 0.20504
}

Semantic roles & 50–950 ramp

primary

#3F83B2

secondary

#C4A189

accent

#8850D7

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3F83B2

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

Preview Lab → · Contrast checker → · Palette generator →