#3F83BF#3F83BF

#3F83BF is a mid, moderate cyan. Relative luminance 0.211; OKLCH L 59.3% C 0.115 H 247.8°. Best body text is #000000 at 5.21:1 contrast (WCAG AA passes).

Color values

HEX	#3F83BF
RGB	rgb(63, 131, 191)
HSL	hsl(208, 50%, 50%)
HSV	hsv(208, 67%, 75%)
CMYK	cmyk(67%, 31.4%, 0%, 25.1%)
CIE-LAB	lab(53.00, -2.19, -37.67)
CIE-LCH	lch(53.00, 37.74, 266.67°)
OKLab	oklab(59.32% -0.0436 -0.1065)
OKLCH	oklch(59.32% 0.115 247.8)
XYZ	xyz(19.5667, 21.0489, 52.3118)
Luminance	0.2105 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F83BF #BF7B3F

analogous

#3FBFBB #3F83BF #3F43BF

triadic

#3F83BF #BF3F83 #83BF3F

tetradic

#3F83BF #BB3FBF #BF7B3F #43BF3F

square

#3F83BF #BB3FBF #BF7B3F #43BF3F

split-complementary

#3F83BF #BF3F43 #BFBB3F

monochromatic

#214463 #306391 #3F83BF #6DA1CF #9BBEDE

Accessibility & contrast

On white

4.03

#3F83BF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.21

#3F83BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F83BF

5.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F83BF	#FFFFFF	#000000	##000000
##3F83BF	1.00	4.03	5.21	5.21
#FFFFFF	4.03	1.00	21.00	21.00
#000000	5.21	21.00	1.00	1.00
##000000	5.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6885C2

Deuteranopia (green-blind)

#5779BE

Tritanopia (blue-blind)

#009198

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #3f83bf;
/* rgb */ color: rgb(63, 131, 191);
/* oklch */ color: oklch(59.3% 0.115 247.8);

Tailwind

colors: {
  custom: {
    50: '#82a6d2',
    500: '#3f83bf',
    950: '#000000',
  },
}

SCSS

$custom: #3f83bf;
$custom-light: #82a6d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f83bf",
  "rgb": {
    "r": 63,
    "g": 131,
    "b": 191
  },
  "hsl": {
    "h": 208.125,
    "s": 50.394,
    "l": 49.804
  },
  "oklch": {
    "l": 0.59317,
    "c": 0.11512,
    "h": 247.8
  },
  "luminance": 0.21051
}

Semantic roles & 50–950 ramp

primary

#3F83BF

secondary

#CAAB90

accent

#904EDA

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #3F83BF

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

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