#3957C1#3957C1

#3957C1 is a mid, vivid blue. Relative luminance 0.115; OKLCH L 49.6% C 0.170 H 267.8°. Best body text is #FFFFFF at 6.35:1 contrast (WCAG AA passes).

Color values

HEX	#3957C1
RGB	rgb(57, 87, 193)
HSL	hsl(227, 54%, 49%)
HSV	hsv(227, 70%, 76%)
CMYK	cmyk(70.5%, 54.9%, 0%, 24.3%)
CIE-LAB	lab(40.47, 25.10, -58.87)
CIE-LCH	lch(40.47, 63.99, 293.10°)
OKLab	oklab(49.61% -0.0065 -0.1695)
OKLCH	oklch(49.61% 0.17 267.8)
XYZ	xyz(14.7178, 11.5350, 51.8926)
Luminance	0.1154 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3957C1 #C1A339

analogous

#399BC1 #3957C1 #5F39C1

triadic

#3957C1 #C13957 #57C139

tetradic

#3957C1 #C1399B #C1A339 #39C15F

square

#3957C1 #C1399B #C1A339 #39C15F

split-complementary

#3957C1 #C15F39 #9BC139

monochromatic

#1D2C63 #2B4292 #3957C1 #667DD2 #95A5E0

Accessibility & contrast

On white

6.35

#3957C1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.31

#3957C1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3957C1

6.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3957C1	#FFFFFF	#000000	##FFFFFF
##3957C1	1.00	6.35	3.31	6.35
#FFFFFF	6.35	1.00	21.00	1.00
#000000	3.31	21.00	1.00	21.00
##FFFFFF	6.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066C5

Deuteranopia (green-blind)

#0059BF

Tritanopia (blue-blind)

#007183

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3957c1;
/* rgb */ color: rgb(57, 87, 193);
/* oklch */ color: oklch(49.6% 0.170 267.8);

Tailwind

colors: {
  custom: {
    50: '#8086d4',
    500: '#3957c1',
    950: '#000000',
  },
}

SCSS

$custom: #3957c1;
$custom-light: #8086d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3957c1",
  "rgb": {
    "r": 57,
    "g": 87,
    "b": 193
  },
  "hsl": {
    "h": 226.765,
    "s": 54.4,
    "l": 49.02
  },
  "oklch": {
    "l": 0.49613,
    "c": 0.1696,
    "h": 267.8
  },
  "luminance": 0.11537
}

Semantic roles & 50–950 ramp

primary

#3957C1

secondary

#CBBD8B

accent

#BD4ADE

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #3957C1

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

Preview Lab → · Contrast checker → · Palette generator →