#3951C7#3951C7

#3951C7 is a mid, vivid blue. Relative luminance 0.109; OKLCH L 48.9% C 0.185 H 269.5°. Best body text is #FFFFFF at 6.61:1 contrast (WCAG AA passes).

Color values

HEX	#3951C7
RGB	rgb(57, 81, 199)
HSL	hsl(230, 56%, 50%)
HSV	hsv(230, 71%, 78%)
CMYK	cmyk(71.4%, 59.3%, 0%, 22%)
CIE-LAB	lab(39.37, 31.14, -64.13)
CIE-LCH	lch(39.37, 71.29, 295.90°)
OKLab	oklab(48.94% -0.0017 -0.185)
OKLCH	oklch(48.94% 0.185 269.5)
XYZ	xyz(14.9350, 10.8767, 55.3341)
Luminance	0.1088 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3951C7 #C7AF39

analogous

#3998C7 #3951C7 #6839C7

triadic

#3951C7 #C73951 #51C739

tetradic

#3951C7 #C73998 #C7AF39 #39C768

square

#3951C7 #C73998 #C7AF39 #39C768

split-complementary

#3951C7 #C76839 #98C739

monochromatic

#1D2A68 #2B3D98 #3951C7 #697BD4 #98A5E2

Accessibility & contrast

On white

6.61

#3951C7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.18

#3951C7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3951C7

6.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3951C7	#FFFFFF	#000000	##FFFFFF
##3951C7	1.00	6.61	3.18	6.61
#FFFFFF	6.61	1.00	21.00	1.00
#000000	3.18	21.00	1.00	21.00
##FFFFFF	6.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063CB

Deuteranopia (green-blind)

#0056C5

Tritanopia (blue-blind)

#006F84

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3951c7;
/* rgb */ color: rgb(57, 81, 199);
/* oklch */ color: oklch(48.9% 0.185 269.5);

Tailwind

colors: {
  custom: {
    50: '#8281d9',
    500: '#3951c7',
    950: '#000000',
  },
}

SCSS

$custom: #3951c7;
$custom-light: #8281d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3951c7",
  "rgb": {
    "r": 57,
    "g": 81,
    "b": 199
  },
  "hsl": {
    "h": 229.859,
    "s": 55.906,
    "l": 50.196
  },
  "oklch": {
    "l": 0.48936,
    "c": 0.18504,
    "h": 269.5
  },
  "luminance": 0.10878
}

Semantic roles & 50–950 ramp

primary

#3951C7

secondary

#CEC38E

accent

#C649DF

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3951C7

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

Preview Lab → · Contrast checker → · Palette generator →