#3F83BE#3F83BE

#3F83BE is a mid, moderate cyan. Relative luminance 0.210; OKLCH L 59.3% C 0.114 H 247.3°. Best body text is #000000 at 5.20:1 contrast (WCAG AA passes).

Color values

HEX	#3F83BE
RGB	rgb(63, 131, 190)
HSL	hsl(208, 50%, 50%)
HSV	hsv(208, 67%, 75%)
CMYK	cmyk(66.8%, 31.1%, 0%, 25.5%)
CIE-LAB	lab(52.96, -2.54, -37.18)
CIE-LCH	lch(52.96, 37.26, 266.09°)
OKLab	oklab(59.26% -0.0439 -0.1051)
OKLCH	oklch(59.26% 0.114 247.3)
XYZ	xyz(19.4570, 21.0051, 51.7342)
Luminance	0.2101 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F83BE #BE7A3F

analogous

#3FBEBA #3F83BE #3F43BE

triadic

#3F83BE #BE3F83 #83BE3F

tetradic

#3F83BE #BA3FBE #BE7A3F #43BE3F

square

#3F83BE #BA3FBE #BE7A3F #43BE3F

split-complementary

#3F83BE #BE3F43 #BEBA3F

monochromatic

#214462 #306390 #3F83BE #6CA1CE #9ABEDD

Accessibility & contrast

On white

4.04

#3F83BE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.20

#3F83BE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F83BE

5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F83BE	#FFFFFF	#000000	##000000
##3F83BE	1.00	4.04	5.20	5.20
#FFFFFF	4.04	1.00	21.00	21.00
#000000	5.20	21.00	1.00	1.00
##000000	5.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6985C1

Deuteranopia (green-blind)

#5779BD

Tritanopia (blue-blind)

#009198

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #3f83be;
/* rgb */ color: rgb(63, 131, 190);
/* oklch */ color: oklch(59.3% 0.114 247.3);

Tailwind

colors: {
  custom: {
    50: '#81a6d2',
    500: '#3f83be',
    950: '#000000',
  },
}

SCSS

$custom: #3f83be;
$custom-light: #81a6d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f83be",
  "rgb": {
    "r": 63,
    "g": 131,
    "b": 190
  },
  "hsl": {
    "h": 207.874,
    "s": 50.198,
    "l": 49.608
  },
  "oklch": {
    "l": 0.59264,
    "c": 0.11391,
    "h": 247.3
  },
  "luminance": 0.21007
}

Semantic roles & 50–950 ramp

primary

#3F83BE

secondary

#C9AA8F

accent

#8F4EDA

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #3F83BE

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

Preview Lab → · Contrast checker → · Palette generator →