#3F8CDB#3F8CDB

#3F8CDB is a light, vivid cyan. Relative luminance 0.249; OKLCH L 62.9% C 0.141 H 251.6°. Best body text is #000000 at 5.99:1 contrast (WCAG AA passes).

Color values

HEX	#3F8CDB
RGB	rgb(63, 140, 219)
HSL	hsl(210, 68%, 55%)
HSV	hsv(210, 71%, 86%)
CMYK	cmyk(71.2%, 36.1%, 0%, 14.1%)
CIE-LAB	lab(57.00, 2.28, -47.19)
CIE-LCH	lch(57.00, 47.25, 272.77°)
OKLab	oklab(62.91% -0.0447 -0.1342)
OKLCH	oklch(62.91% 0.141 251.6)
XYZ	xyz(24.2094, 24.9247, 70.5392)
Luminance	0.2493 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F8CDB #DB8E3F

analogous

#3FDADB #3F8CDB #403FDB

triadic

#3F8CDB #DB3F8C #8CDB3F

tetradic

#3F8CDB #DB3FDA #DB8E3F #3FDB40

square

#3F8CDB #DB3FDA #DB8E3F #3FDB40

split-complementary

#3F8CDB #DB403F #DADB3F

monochromatic

#194F86 #236DBA #3F8CDB #73ABE5 #A6CAEE

Accessibility & contrast

On white

3.51

#3F8CDB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.99

#3F8CDB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F8CDB

5.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F8CDB	#FFFFFF	#000000	##000000
##3F8CDB	1.00	3.51	5.99	5.99
#FFFFFF	3.51	1.00	21.00	21.00
#000000	5.99	21.00	1.00	1.00
##000000	5.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6891DE

Deuteranopia (green-blind)

#5182D9

Tritanopia (blue-blind)

#009FA9

Achromatopsia (no color)

#898989

Design tokens & code

CSS

--color: #3f8cdb;
/* rgb */ color: rgb(63, 140, 219);
/* oklch */ color: oklch(62.9% 0.141 251.6);

Tailwind

colors: {
  custom: {
    50: '#86ade6',
    500: '#3f8cdb',
    950: '#000000',
  },
}

SCSS

$custom: #3f8cdb;
$custom-light: #86ade6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f8cdb",
  "rgb": {
    "r": 63,
    "g": 140,
    "b": 219
  },
  "hsl": {
    "h": 210.385,
    "s": 68.421,
    "l": 55.294
  },
  "oklch": {
    "l": 0.62913,
    "c": 0.14147,
    "h": 251.6
  },
  "luminance": 0.24927
}

Semantic roles & 50–950 ramp

primary

#3F8CDB

secondary

#DCBB9A

accent

#953DEB

background

#F8FAFE

surface

#F0F4FC

border

#CBCED5

text

#0D1016

muted

#7D7F84

Preview Lab

Preview with #3F8CDB

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

Preview Lab → · Contrast checker → · Palette generator →