#3951CA#3951CA

#3951CA is a mid, vivid blue. Relative luminance 0.110; OKLCH L 49.2% C 0.189 H 269.5°. Best body text is #FFFFFF at 6.55:1 contrast (WCAG AA passes).

Color values

HEX	#3951CA
RGB	rgb(57, 81, 202)
HSL	hsl(230, 58%, 51%)
HSV	hsv(230, 72%, 79%)
CMYK	cmyk(71.8%, 59.9%, 0%, 20.8%)
CIE-LAB	lab(39.61, 32.22, -65.49)
CIE-LCH	lch(39.61, 72.98, 296.19°)
OKLab	oklab(49.19% -0.0017 -0.189)
OKLCH	oklch(49.19% 0.189 269.5)
XYZ	xyz(15.2868, 11.0174, 57.1866)
Luminance	0.1102 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3951CA #CAB239

analogous

#3999CA #3951CA #6939CA

triadic

#3951CA #CA3951 #51CA39

tetradic

#3951CA #CA3999 #CAB239 #39CA69

square

#3951CA #CA3999 #CAB239 #39CA69

split-complementary

#3951CA #CA6939 #99CA39

monochromatic

#1D2A6C #2A3D9C #3951CA #697BD7 #9AA6E4

Accessibility & contrast

On white

6.55

#3951CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.20

#3951CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3951CA

6.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3951CA	#FFFFFF	#000000	##FFFFFF
##3951CA	1.00	6.55	3.20	6.55
#FFFFFF	6.55	1.00	21.00	1.00
#000000	3.20	21.00	1.00	21.00
##FFFFFF	6.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064CE

Deuteranopia (green-blind)

#0057C8

Tritanopia (blue-blind)

#007086

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3951ca;
/* rgb */ color: rgb(57, 81, 202);
/* oklch */ color: oklch(49.2% 0.189 269.5);

Tailwind

colors: {
  custom: {
    50: '#8381db',
    500: '#3951ca',
    950: '#000000',
  },
}

SCSS

$custom: #3951ca;
$custom-light: #8381db;
$custom-dark: #000000;

JSON

{
  "hex": "#3951ca",
  "rgb": {
    "r": 57,
    "g": 81,
    "b": 202
  },
  "hsl": {
    "h": 230.069,
    "s": 57.769,
    "l": 50.784
  },
  "oklch": {
    "l": 0.49187,
    "c": 0.18901,
    "h": 269.5
  },
  "luminance": 0.11019
}

Semantic roles & 50–950 ramp

primary

#3951CA

secondary

#D0C58F

accent

#C747E1

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3951CA

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

Preview Lab → · Contrast checker → · Palette generator →