#3957C3#3957C3

#3957C3 is a mid, vivid blue. Relative luminance 0.116; OKLCH L 49.8% C 0.172 H 267.9°. Best body text is #FFFFFF at 6.32:1 contrast (WCAG AA passes).

Color values

HEX	#3957C3
RGB	rgb(57, 87, 195)
HSL	hsl(227, 55%, 49%)
HSV	hsv(227, 71%, 76%)
CMYK	cmyk(70.8%, 55.4%, 0%, 23.5%)
CIE-LAB	lab(40.61, 25.83, -59.79)
CIE-LCH	lch(40.61, 65.13, 293.37°)
OKLab	oklab(49.77% -0.0064 -0.1722)
OKLCH	oklch(49.77% 0.172 267.9)
XYZ	xyz(14.9425, 11.6249, 53.0755)
Luminance	0.1163 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3957C3 #C3A539

analogous

#399CC3 #3957C3 #6039C3

triadic

#3957C3 #C33957 #57C339

tetradic

#3957C3 #C3399C #C3A539 #39C360

square

#3957C3 #C3399C #C3A539 #39C360

split-complementary

#3957C3 #C36039 #9CC339

monochromatic

#1D2D64 #2B4294 #3957C3 #677ED2 #96A6E0

Accessibility & contrast

On white

6.32

#3957C3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#3957C3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3957C3

6.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3957C3	#FFFFFF	#000000	##FFFFFF
##3957C3	1.00	6.32	3.33	6.32
#FFFFFF	6.32	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066C7

Deuteranopia (green-blind)

#005AC1

Tritanopia (blue-blind)

#007184

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #3957c3;
/* rgb */ color: rgb(57, 87, 195);
/* oklch */ color: oklch(49.8% 0.172 267.9);

Tailwind

colors: {
  custom: {
    50: '#8186d6',
    500: '#3957c3',
    950: '#000000',
  },
}

SCSS

$custom: #3957c3;
$custom-light: #8186d6;
$custom-dark: #000000;

JSON

{
  "hex": "#3957c3",
  "rgb": {
    "r": 57,
    "g": 87,
    "b": 195
  },
  "hsl": {
    "h": 226.957,
    "s": 54.762,
    "l": 49.412
  },
  "oklch": {
    "l": 0.49769,
    "c": 0.17231,
    "h": 267.9
  },
  "luminance": 0.11626
}

Semantic roles & 50–950 ramp

primary

#3957C3

secondary

#CCBE8C

accent

#BE4ADE

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #3957C3

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

Preview Lab → · Contrast checker → · Palette generator →