#3F53C8#3F53C8

#3F53C8 is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.7% C 0.182 H 270.8°. Best body text is #FFFFFF at 6.40:1 contrast (WCAG AA passes).

Color values

HEX	#3F53C8
RGB	rgb(63, 83, 200)
HSL	hsl(231, 55%, 52%)
HSV	hsv(231, 69%, 78%)
CMYK	cmyk(68.5%, 58.5%, 0%, 21.6%)
CIE-LAB	lab(40.27, 31.03, -63.24)
CIE-LCH	lch(40.27, 70.45, 296.13°)
OKLab	oklab(49.71% 0.0027 -0.1823)
OKLCH	oklch(49.71% 0.182 270.8)
XYZ	xyz(15.5649, 11.4119, 56.0148)
Luminance	0.1141 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F53C8 #C8B43F

analogous

#3F98C8 #3F53C8 #703FC8

triadic

#3F53C8 #C83F53 #53C83F

tetradic

#3F53C8 #C83F98 #C8B43F #3FC870

square

#3F53C8 #C83F98 #C8B43F #3FC870

split-complementary

#3F53C8 #C8703F #98C83F

monochromatic

#1F2B6D #2D3D9D #3F53C8 #6F7ED6 #9EA8E3

Accessibility & contrast

On white

6.40

#3F53C8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#3F53C8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F53C8

6.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F53C8	#FFFFFF	#000000	##FFFFFF
##3F53C8	1.00	6.40	3.28	6.40
#FFFFFF	6.40	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0065CC

Deuteranopia (green-blind)

#0059C6

Tritanopia (blue-blind)

#007085

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3f53c8;
/* rgb */ color: rgb(63, 83, 200);
/* oklch */ color: oklch(49.7% 0.182 270.8);

Tailwind

colors: {
  custom: {
    50: '#8583da',
    500: '#3f53c8',
    950: '#000000',
  },
}

SCSS

$custom: #3f53c8;
$custom-light: #8583da;
$custom-dark: #000000;

JSON

{
  "hex": "#3f53c8",
  "rgb": {
    "r": 63,
    "g": 83,
    "b": 200
  },
  "hsl": {
    "h": 231.241,
    "s": 55.466,
    "l": 51.569
  },
  "oklch": {
    "l": 0.4971,
    "c": 0.18229,
    "h": 270.8
  },
  "luminance": 0.11413
}

Semantic roles & 50–950 ramp

primary

#3F53C8

secondary

#D0C793

accent

#C949DF

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3F53C8

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

Preview Lab → · Contrast checker → · Palette generator →