#3F6ED0#3F6ED0

#3F6ED0 is a mid, vivid blue. Relative luminance 0.168; OKLCH L 55.7% C 0.160 H 263.0°. Best body text is #FFFFFF at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#3F6ED0
RGB	rgb(63, 110, 208)
HSL	hsl(221, 61%, 53%)
HSV	hsv(221, 70%, 82%)
CMYK	cmyk(69.7%, 47.1%, 0%, 18.4%)
CIE-LAB	lab(47.96, 16.71, -55.41)
CIE-LCH	lch(47.96, 57.87, 286.78°)
OKLab	oklab(55.7% -0.0195 -0.1588)
OKLCH	oklch(55.7% 0.16 263)
XYZ	xyz(19.0070, 16.7607, 61.8957)
Luminance	0.1676 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6ED0 #D0A13F

analogous

#3FB6D0 #3F6ED0 #593FD0

triadic

#3F6ED0 #D03F6E #6ED03F

tetradic

#3F6ED0 #D03FB6 #D0A13F #3FD059

square

#3F6ED0 #D03FB6 #D0A13F #3FD059

split-complementary

#3F6ED0 #D0593F #B6D03F

monochromatic

#1D3A77 #2953A9 #3F6ED0 #7093DC #A1B8E8

Accessibility & contrast

On white

4.82

#3F6ED0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.35

#3F6ED0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6ED0

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6ED0	#FFFFFF	#000000	##FFFFFF
##3F6ED0	1.00	4.82	4.35	4.82
#FFFFFF	4.82	1.00	21.00	1.00
#000000	4.35	21.00	1.00	21.00
##FFFFFF	4.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A79D4

Deuteranopia (green-blind)

#176CCE

Tritanopia (blue-blind)

#008595

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3f6ed0;
/* rgb */ color: rgb(63, 110, 208);
/* oklch */ color: oklch(55.7% 0.160 263.0);

Tailwind

colors: {
  custom: {
    50: '#8597df',
    500: '#3f6ed0',
    950: '#000000',
  },
}

SCSS

$custom: #3f6ed0;
$custom-light: #8597df;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6ed0",
  "rgb": {
    "r": 63,
    "g": 110,
    "b": 208
  },
  "hsl": {
    "h": 220.552,
    "s": 60.669,
    "l": 53.137
  },
  "oklch": {
    "l": 0.55699,
    "c": 0.16001,
    "h": 263
  },
  "luminance": 0.16763
}

Semantic roles & 50–950 ramp

primary

#3F6ED0

secondary

#D5C096

accent

#B044E4

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F6ED0

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

Preview Lab → · Contrast checker → · Palette generator →