#3F7CE9#3F7CE9

#3F7CE9 is a mid, vivid blue. Relative luminance 0.214; OKLCH L 60.3% C 0.177 H 261.0°. Best body text is #000000 at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#3F7CE9
RGB	rgb(63, 124, 233)
HSL	hsl(218, 79%, 58%)
HSV	hsv(218, 73%, 91%)
CMYK	cmyk(73%, 46.8%, 0%, 8.6%)
CIE-LAB	lab(53.33, 17.00, -60.88)
CIE-LCH	lch(53.33, 63.21, 285.61°)
OKLab	oklab(60.32% -0.0278 -0.1747)
OKLCH	oklch(60.32% 0.177 261)
XYZ	xyz(23.9602, 21.3526, 79.9337)
Luminance	0.2135 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7CE9 #E9AC3F

analogous

#3FD1E9 #3F7CE9 #573FE9

triadic

#3F7CE9 #E93F7C #7CE93F

tetradic

#3F7CE9 #E93FD1 #E9AC3F #3FE957

square

#3F7CE9 #E93FD1 #E9AC3F #3FE957

split-complementary

#3F7CE9 #E9573F #D1E93F

monochromatic

#12439C #185BD3 #3F7CE9 #76A1EF #ADC7F6

Accessibility & contrast

On white

3.98

#3F7CE9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.27

#3F7CE9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7CE9

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7CE9	#FFFFFF	#000000	##000000
##3F7CE9	1.00	3.98	5.27	5.27
#FFFFFF	3.98	1.00	21.00	21.00
#000000	5.27	21.00	1.00	1.00
##000000	5.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4188ED

Deuteranopia (green-blind)

#1278E7

Tritanopia (blue-blind)

#0096A7

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #3f7ce9;
/* rgb */ color: rgb(63, 124, 233);
/* oklch */ color: oklch(60.3% 0.177 261.0);

Tailwind

colors: {
  custom: {
    50: '#89a1f1',
    500: '#3f7ce9',
    950: '#000000',
  },
}

SCSS

$custom: #3f7ce9;
$custom-light: #89a1f1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7ce9",
  "rgb": {
    "r": 63,
    "g": 124,
    "b": 233
  },
  "hsl": {
    "h": 218.471,
    "s": 79.439,
    "l": 58.039
  },
  "oklch": {
    "l": 0.60323,
    "c": 0.17688,
    "h": 261
  },
  "luminance": 0.21355
}

Semantic roles & 50–950 ramp

primary

#3F7CE9

secondary

#E4CBA0

accent

#B032F6

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0E17

muted

#7E7E85

Preview Lab

Preview with #3F7CE9

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

Preview Lab → · Contrast checker → · Palette generator →