#3F6ED1#3F6ED1

#3F6ED1 is a mid, vivid blue. Relative luminance 0.168; OKLCH L 55.8% C 0.161 H 263.1°. Best body text is #FFFFFF at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#3F6ED1
RGB	rgb(63, 110, 209)
HSL	hsl(221, 61%, 53%)
HSV	hsv(221, 70%, 82%)
CMYK	cmyk(69.9%, 47.4%, 0%, 18%)
CIE-LAB	lab(48.02, 17.07, -55.88)
CIE-LCH	lch(48.02, 58.43, 286.99°)
OKLab	oklab(55.77% -0.0194 -0.1602)
OKLCH	oklch(55.77% 0.161 263.1)
XYZ	xyz(19.1304, 16.8101, 62.5457)
Luminance	0.1681 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6ED1 #D1A23F

analogous

#3FB7D1 #3F6ED1 #593FD1

triadic

#3F6ED1 #D13F6E #6ED13F

tetradic

#3F6ED1 #D13FB7 #D1A23F #3FD159

square

#3F6ED1 #D13FB7 #D1A23F #3FD159

split-complementary

#3F6ED1 #D1593F #B7D13F

monochromatic

#1D3A79 #2952AA #3F6ED1 #7093DD #A2B9E9

Accessibility & contrast

On white

4.81

#3F6ED1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.36

#3F6ED1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6ED1

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6ED1	#FFFFFF	#000000	##FFFFFF
##3F6ED1	1.00	4.81	4.36	4.81
#FFFFFF	4.81	1.00	21.00	1.00
#000000	4.36	21.00	1.00	21.00
##FFFFFF	4.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3979D5

Deuteranopia (green-blind)

#146CCF

Tritanopia (blue-blind)

#008595

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3f6ed1;
/* rgb */ color: rgb(63, 110, 209);
/* oklch */ color: oklch(55.8% 0.161 263.1);

Tailwind

colors: {
  custom: {
    50: '#8597e0',
    500: '#3f6ed1',
    950: '#000000',
  },
}

SCSS

$custom: #3f6ed1;
$custom-light: #8597e0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6ed1",
  "rgb": {
    "r": 63,
    "g": 110,
    "b": 209
  },
  "hsl": {
    "h": 220.685,
    "s": 61.345,
    "l": 53.333
  },
  "oklch": {
    "l": 0.55768,
    "c": 0.16137,
    "h": 263.1
  },
  "luminance": 0.16812
}

Semantic roles & 50–950 ramp

primary

#3F6ED1

secondary

#D5C197

accent

#B143E4

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F6ED1

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

Preview Lab → · Contrast checker → · Palette generator →