#3957D9#3957D9

#3957D9 is a mid, highly saturated blue. Relative luminance 0.127; OKLCH L 51.6% C 0.201 H 268.3°. Best body text is #FFFFFF at 5.93:1 contrast (WCAG AA passes).

Color values

HEX	#3957D9
RGB	rgb(57, 87, 217)
HSL	hsl(229, 68%, 54%)
HSV	hsv(229, 74%, 85%)
CMYK	cmyk(73.7%, 59.9%, 0%, 14.9%)
CIE-LAB	lab(42.30, 33.79, -69.73)
CIE-LCH	lch(42.30, 77.48, 295.85°)
OKLab	oklab(51.56% -0.0058 -0.2014)
OKLCH	oklch(51.56% 0.201 268.3)
XYZ	xyz(17.6156, 12.6941, 67.1540)
Luminance	0.1270 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3957D9 #D9BB39

analogous

#39A7D9 #3957D9 #6B39D9

triadic

#3957D9 #D93957 #57D939

tetradic

#3957D9 #D939A7 #D9BB39 #39D96B

square

#3957D9 #D939A7 #D9BB39 #39D96B

split-complementary

#3957D9 #D96B39 #A7D939

monochromatic

#182C7F #223DB3 #3957D9 #6C83E3 #A0AEED

Accessibility & contrast

On white

5.93

#3957D9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#3957D9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3957D9

5.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3957D9	#FFFFFF	#000000	##FFFFFF
##3957D9	1.00	5.93	3.54	5.93
#FFFFFF	5.93	1.00	21.00	1.00
#000000	3.54	21.00	1.00	21.00
##FFFFFF	5.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006BDD

Deuteranopia (green-blind)

#005DD6

Tritanopia (blue-blind)

#007890

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #3957d9;
/* rgb */ color: rgb(57, 87, 217);
/* oklch */ color: oklch(51.6% 0.201 268.3);

Tailwind

colors: {
  custom: {
    50: '#8586e6',
    500: '#3957d9',
    950: '#000000',
  },
}

SCSS

$custom: #3957d9;
$custom-light: #8586e6;
$custom-dark: #000000;

JSON

{
  "hex": "#3957d9",
  "rgb": {
    "r": 57,
    "g": 87,
    "b": 217
  },
  "hsl": {
    "h": 228.75,
    "s": 67.797,
    "l": 53.725
  },
  "oklch": {
    "l": 0.51556,
    "c": 0.20146,
    "h": 268.3
  },
  "luminance": 0.12696
}

Semantic roles & 50–950 ramp

primary

#3957D9

secondary

#D9CC95

accent

#CA3DEB

background

#F9F8FE

surface

#F1EFFC

border

#CBCAD5

text

#0D0B16

muted

#7E7C84

Preview Lab

Preview with #3957D9

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

Preview Lab → · Contrast checker → · Palette generator →