#3F7FE3#3F7FE3

#3F7FE3 is a mid, vivid blue. Relative luminance 0.218; OKLCH L 60.6% C 0.166 H 259.1°. Best body text is #000000 at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#3F7FE3
RGB	rgb(63, 127, 227)
HSL	hsl(217, 75%, 57%)
HSV	hsv(217, 72%, 89%)
CMYK	cmyk(72.2%, 44.1%, 0%, 11%)
CIE-LAB	lab(53.79, 12.99, -56.79)
CIE-LCH	lch(53.79, 58.25, 282.88°)
OKLab	oklab(60.56% -0.0313 -0.1626)
OKLCH	oklch(60.56% 0.166 259.1)
XYZ	xyz(23.4994, 21.7790, 75.6234)
Luminance	0.2178 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7FE3 #E3A33F

analogous

#3FD1E3 #3F7FE3 #513FE3

triadic

#3F7FE3 #E33F7F #7FE33F

tetradic

#3F7FE3 #E33FD1 #E3A33F #3FE351

square

#3F7FE3 #E33FD1 #E3A33F #3FE351

split-complementary

#3F7FE3 #E3513F #D1E33F

monochromatic

#154692 #1D60C8 #3F7FE3 #74A3EB #AAC6F3

Accessibility & contrast

On white

3.92

#3F7FE3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.36

#3F7FE3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7FE3

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7FE3	#FFFFFF	#000000	##000000
##3F7FE3	1.00	3.92	5.36	5.36
#FFFFFF	3.92	1.00	21.00	21.00
#000000	5.36	21.00	1.00	1.00
##000000	5.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D89E7

Deuteranopia (green-blind)

#2D7AE1

Tritanopia (blue-blind)

#0096A6

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #3f7fe3;
/* rgb */ color: rgb(63, 127, 227);
/* oklch */ color: oklch(60.6% 0.166 259.1);

Tailwind

colors: {
  custom: {
    50: '#88a3ec',
    500: '#3f7fe3',
    950: '#000000',
  },
}

SCSS

$custom: #3f7fe3;
$custom-light: #88a3ec;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7fe3",
  "rgb": {
    "r": 63,
    "g": 127,
    "b": 227
  },
  "hsl": {
    "h": 216.585,
    "s": 74.545,
    "l": 56.863
  },
  "oklch": {
    "l": 0.60559,
    "c": 0.16558,
    "h": 259.1
  },
  "luminance": 0.21782
}

Semantic roles & 50–950 ramp

primary

#3F7FE3

secondary

#E0C69D

accent

#A837F1

background

#F9FAFE

surface

#F1F3FD

border

#CBCDD5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #3F7FE3

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

Preview Lab → · Contrast checker → · Palette generator →