#3F53CA#3F53CA

#3F53CA is a mid, vivid blue. Relative luminance 0.115; OKLCH L 49.9% C 0.185 H 270.8°. Best body text is #FFFFFF at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#3F53CA
RGB	rgb(63, 83, 202)
HSL	hsl(231, 57%, 52%)
HSV	hsv(231, 69%, 79%)
CMYK	cmyk(68.8%, 58.9%, 0%, 20.8%)
CIE-LAB	lab(40.42, 31.73, -64.15)
CIE-LCH	lch(40.42, 71.57, 296.32°)
OKLab	oklab(49.87% 0.0027 -0.1849)
OKLCH	oklch(49.87% 0.185 270.8)
XYZ	xyz(15.8002, 11.5060, 57.2539)
Luminance	0.1151 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F53CA #CAB63F

analogous

#3F99CA #3F53CA #713FCA

triadic

#3F53CA #CA3F53 #53CA3F

tetradic

#3F53CA #CA3F99 #CAB63F #3FCA71

square

#3F53CA #CA3F99 #CAB63F #3FCA71

split-complementary

#3F53CA #CA713F #99CA3F

monochromatic

#1F2A70 #2C3DA0 #3F53CA #6F7ED7 #9FA9E4

Accessibility & contrast

On white

6.36

#3F53CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#3F53CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F53CA

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F53CA	#FFFFFF	#000000	##FFFFFF
##3F53CA	1.00	6.36	3.30	6.36
#FFFFFF	6.36	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066CE

Deuteranopia (green-blind)

#0059C8

Tritanopia (blue-blind)

#007186

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3f53ca;
/* rgb */ color: rgb(63, 83, 202);
/* oklch */ color: oklch(49.9% 0.185 270.8);

Tailwind

colors: {
  custom: {
    50: '#8583db',
    500: '#3f53ca',
    950: '#000000',
  },
}

SCSS

$custom: #3f53ca;
$custom-light: #8583db;
$custom-dark: #000000;

JSON

{
  "hex": "#3f53ca",
  "rgb": {
    "r": 63,
    "g": 83,
    "b": 202
  },
  "hsl": {
    "h": 231.367,
    "s": 56.735,
    "l": 51.961
  },
  "oklch": {
    "l": 0.49873,
    "c": 0.18495,
    "h": 270.8
  },
  "luminance": 0.11508
}

Semantic roles & 50–950 ramp

primary

#3F53CA

secondary

#D1C894

accent

#CA48E0

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3F53CA

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

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