#3956C9#3956C9

#3956C9 is a mid, vivid blue. Relative luminance 0.117; OKLCH L 50.1% C 0.182 H 268.3°. Best body text is #FFFFFF at 6.27:1 contrast (WCAG AA passes).

Color values

HEX	#3956C9
RGB	rgb(57, 86, 201)
HSL	hsl(228, 57%, 51%)
HSV	hsv(228, 72%, 79%)
CMYK	cmyk(71.6%, 57.2%, 0%, 21.2%)
CIE-LAB	lab(40.80, 28.66, -62.97)
CIE-LCH	lch(40.80, 69.18, 294.47°)
OKLab	oklab(50.05% -0.0054 -0.1815)
OKLCH	oklch(50.05% 0.182 268.3)
XYZ	xyz(15.5541, 11.7409, 56.6935)
Luminance	0.1174 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3956C9 #C9AC39

analogous

#399EC9 #3956C9 #6439C9

triadic

#3956C9 #C93956 #56C939

tetradic

#3956C9 #C9399E #C9AC39 #39C964

square

#3956C9 #C9399E #C9AC39 #39C964

split-complementary

#3956C9 #C96439 #9EC939

monochromatic

#1D2D6B #2A419B #3956C9 #697FD6 #99A8E3

Accessibility & contrast

On white

6.27

#3956C9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#3956C9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3956C9

6.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3956C9	#FFFFFF	#000000	##FFFFFF
##3956C9	1.00	6.27	3.35	6.27
#FFFFFF	6.27	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0067CD

Deuteranopia (green-blind)

#005AC7

Tritanopia (blue-blind)

#007287

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #3956c9;
/* rgb */ color: rgb(57, 86, 201);
/* oklch */ color: oklch(50.1% 0.182 268.3);

Tailwind

colors: {
  custom: {
    50: '#8285da',
    500: '#3956c9',
    950: '#000000',
  },
}

SCSS

$custom: #3956c9;
$custom-light: #8285da;
$custom-dark: #000000;

JSON

{
  "hex": "#3956c9",
  "rgb": {
    "r": 57,
    "g": 86,
    "b": 201
  },
  "hsl": {
    "h": 227.917,
    "s": 57.143,
    "l": 50.588
  },
  "oklch": {
    "l": 0.50051,
    "c": 0.18162,
    "h": 268.3
  },
  "luminance": 0.11742
}

Semantic roles & 50–950 ramp

primary

#3956C9

secondary

#CFC28F

accent

#C247E0

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3956C9

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

Preview Lab → · Contrast checker → · Palette generator →