#3F7CE1#3F7CE1

#3F7CE1 is a mid, vivid blue. Relative luminance 0.209; OKLCH L 59.8% C 0.166 H 259.9°. Best body text is #000000 at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#3F7CE1
RGB	rgb(63, 124, 225)
HSL	hsl(217, 73%, 56%)
HSV	hsv(217, 72%, 88%)
CMYK	cmyk(72%, 44.9%, 0%, 11.8%)
CIE-LAB	lab(52.85, 14.12, -57.18)
CIE-LCH	lch(52.85, 58.90, 283.87°)
OKLab	oklab(59.79% -0.0291 -0.1638)
OKLCH	oklch(59.79% 0.166 259.9)
XYZ	xyz(22.8433, 20.9058, 74.0509)
Luminance	0.2091 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7CE1 #E1A43F

analogous

#3FCDE1 #3F7CE1 #533FE1

triadic

#3F7CE1 #E13F7C #7CE13F

tetradic

#3F7CE1 #E13FCD #E1A43F #3FE153

square

#3F7CE1 #E13FCD #E1A43F #3FE153

split-complementary

#3F7CE1 #E1533F #CDE13F

monochromatic

#16448F #1F5DC4 #3F7CE1 #74A0E9 #A9C4F2

Accessibility & contrast

On white

4.05

#3F7CE1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.18

#3F7CE1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7CE1

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7CE1	#FFFFFF	#000000	##000000
##3F7CE1	1.00	4.05	5.18	5.18
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.18	21.00	1.00	1.00
##000000	5.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4886E5

Deuteranopia (green-blind)

#2777DF

Tritanopia (blue-blind)

#0094A3

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #3f7ce1;
/* rgb */ color: rgb(63, 124, 225);
/* oklch */ color: oklch(59.8% 0.166 259.9);

Tailwind

colors: {
  custom: {
    50: '#88a1eb',
    500: '#3f7ce1',
    950: '#000000',
  },
}

SCSS

$custom: #3f7ce1;
$custom-light: #88a1eb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7ce1",
  "rgb": {
    "r": 63,
    "g": 124,
    "b": 225
  },
  "hsl": {
    "h": 217.407,
    "s": 72.973,
    "l": 56.471
  },
  "oklch": {
    "l": 0.59792,
    "c": 0.16636,
    "h": 259.9
  },
  "luminance": 0.20908
}

Semantic roles & 50–950 ramp

primary

#3F7CE1

secondary

#DFC69D

accent

#AB38F0

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #3F7CE1

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

Preview Lab → · Contrast checker → · Palette generator →