#3959D0#3959D0

#3959D0 is a mid, vivid blue. Relative luminance 0.126; OKLCH L 51.2% C 0.187 H 267.7°. Best body text is #FFFFFF at 5.98:1 contrast (WCAG AA passes).

Color values

HEX	#3959D0
RGB	rgb(57, 89, 208)
HSL	hsl(227, 62%, 52%)
HSV	hsv(227, 73%, 82%)
CMYK	cmyk(72.6%, 57.2%, 0%, 18.4%)
CIE-LAB	lab(42.10, 29.27, -64.89)
CIE-LCH	lch(42.10, 71.18, 294.28°)
OKLab	oklab(51.19% -0.0074 -0.1871)
OKLCH	oklch(51.19% 0.187 267.7)
XYZ	xyz(16.6409, 12.5669, 61.2109)
Luminance	0.1257 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3959D0 #D0B039

analogous

#39A5D0 #3959D0 #6539D0

triadic

#3959D0 #D03959 #59D039

tetradic

#3959D0 #D039A5 #D0B039 #39D065

square

#3959D0 #D039A5 #D0B039 #39D065

split-complementary

#3959D0 #D06539 #A5D039

monochromatic

#1B2E73 #2742A5 #3959D0 #6A82DC #9CACE7

Accessibility & contrast

On white

5.98

#3959D0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.51

#3959D0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3959D0

5.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3959D0	#FFFFFF	#000000	##FFFFFF
##3959D0	1.00	5.98	3.51	5.98
#FFFFFF	5.98	1.00	21.00	1.00
#000000	3.51	21.00	1.00	21.00
##FFFFFF	5.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006BD4

Deuteranopia (green-blind)

#005DCE

Tritanopia (blue-blind)

#00778C

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #3959d0;
/* rgb */ color: rgb(57, 89, 208);
/* oklch */ color: oklch(51.2% 0.187 267.7);

Tailwind

colors: {
  custom: {
    50: '#8387df',
    500: '#3959d0',
    950: '#000000',
  },
}

SCSS

$custom: #3959d0;
$custom-light: #8387df;
$custom-dark: #000000;

JSON

{
  "hex": "#3959d0",
  "rgb": {
    "r": 57,
    "g": 89,
    "b": 208
  },
  "hsl": {
    "h": 227.285,
    "s": 61.633,
    "l": 51.961
  },
  "oklch": {
    "l": 0.51192,
    "c": 0.18729,
    "h": 267.7
  },
  "luminance": 0.12569
}

Semantic roles & 50–950 ramp

primary

#3959D0

secondary

#D3C591

accent

#C243E5

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3959D0

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

Preview Lab → · Contrast checker → · Palette generator →