#3975D0#3975D0

#3975D0 is a mid, vivid blue. Relative luminance 0.181; OKLCH L 57.0% C 0.154 H 258.7°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#3975D0
RGB	rgb(57, 117, 208)
HSL	hsl(216, 62%, 52%)
HSV	hsv(216, 73%, 82%)
CMYK	cmyk(72.6%, 43.8%, 0%, 18.4%)
CIE-LAB	lab(49.67, 11.48, -52.67)
CIE-LCH	lch(49.67, 53.91, 282.29°)
OKLab	oklab(56.95% -0.0302 -0.1507)
OKLCH	oklch(56.95% 0.154 258.7)
XYZ	xyz(19.4297, 18.1444, 62.1405)
Luminance	0.1815 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3975D0 #D09439

analogous

#39C1D0 #3975D0 #4939D0

triadic

#3975D0 #D03975 #75D039

tetradic

#3975D0 #D039C1 #D09439 #39D049

square

#3975D0 #D039C1 #D09439 #39D049

split-complementary

#3975D0 #D04939 #C1D039

monochromatic

#1B3E73 #2759A5 #3975D0 #6A97DC #9CBAE7

Accessibility & contrast

On white

4.54

#3975D0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.63

#3975D0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3975D0

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3975D0	#FFFFFF	#000000	##000000
##3975D0	1.00	4.54	4.63	4.63
#FFFFFF	4.54	1.00	21.00	21.00
#000000	4.63	21.00	1.00	1.00
##000000	4.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#487ED3

Deuteranopia (green-blind)

#2B70CE

Tritanopia (blue-blind)

#008A98

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3975d0;
/* rgb */ color: rgb(57, 117, 208);
/* oklch */ color: oklch(57.0% 0.154 258.7);

Tailwind

colors: {
  custom: {
    50: '#829cdf',
    500: '#3975d0',
    950: '#000000',
  },
}

SCSS

$custom: #3975d0;
$custom-light: #829cdf;
$custom-dark: #000000;

JSON

{
  "hex": "#3975d0",
  "rgb": {
    "r": 57,
    "g": 117,
    "b": 208
  },
  "hsl": {
    "h": 216.159,
    "s": 61.633,
    "l": 51.961
  },
  "oklch": {
    "l": 0.56954,
    "c": 0.15374,
    "h": 258.7
  },
  "luminance": 0.18147
}

Semantic roles & 50–950 ramp

primary

#3975D0

secondary

#D3B991

accent

#A443E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3975D0

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

Preview Lab → · Contrast checker → · Palette generator →