#3F83BA#3F83BA

#3F83BA is a mid, moderate cyan. Relative luminance 0.208; OKLCH L 59.1% C 0.109 H 245.6°. Best body text is #000000 at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#3F83BA
RGB	rgb(63, 131, 186)
HSL	hsl(207, 49%, 49%)
HSV	hsv(207, 66%, 73%)
CMYK	cmyk(66.1%, 29.6%, 0%, 27.1%)
CIE-LAB	lab(52.77, -3.92, -35.18)
CIE-LCH	lch(52.77, 35.40, 263.65°)
OKLab	oklab(59.05% -0.0451 -0.0993)
OKLCH	oklch(59.05% 0.109 245.6)
XYZ	xyz(19.0258, 20.8326, 49.4633)
Luminance	0.2084 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F83BA #BA763F

analogous

#3FBAB4 #3F83BA #3F46BA

triadic

#3F83BA #BA3F83 #83BA3F

tetradic

#3F83BA #B43FBA #BA763F #46BA3F

square

#3F83BA #B43FBA #BA763F #46BA3F

split-complementary

#3F83BA #BA3F46 #BAB43F

monochromatic

#20435F #30638C #3F83BA #6AA0CC #97BDDC

Accessibility & contrast

On white

4.06

#3F83BA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.17

#3F83BA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F83BA

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F83BA	#FFFFFF	#000000	##000000
##3F83BA	1.00	4.06	5.17	5.17
#FFFFFF	4.06	1.00	21.00	21.00
#000000	5.17	21.00	1.00	1.00
##000000	5.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B85BC

Deuteranopia (green-blind)

#5A79B9

Tritanopia (blue-blind)

#009096

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #3f83ba;
/* rgb */ color: rgb(63, 131, 186);
/* oklch */ color: oklch(59.1% 0.109 245.6);

Tailwind

colors: {
  custom: {
    50: '#81a6cf',
    500: '#3f83ba',
    950: '#000000',
  },
}

SCSS

$custom: #3f83ba;
$custom-light: #81a6cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f83ba",
  "rgb": {
    "r": 63,
    "g": 131,
    "b": 186
  },
  "hsl": {
    "h": 206.829,
    "s": 49.398,
    "l": 48.824
  },
  "oklch": {
    "l": 0.59052,
    "c": 0.10908,
    "h": 245.6
  },
  "luminance": 0.20835
}

Semantic roles & 50–950 ramp

primary

#3F83BA

secondary

#C8A78D

accent

#8D4FD9

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3F83BA

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

Preview Lab → · Contrast checker → · Palette generator →