#3975CE#3975CE

#3975CE is a mid, vivid blue. Relative luminance 0.180; OKLCH L 56.8% C 0.151 H 258.3°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#3975CE
RGB	rgb(57, 117, 206)
HSL	hsl(216, 60%, 52%)
HSV	hsv(216, 72%, 81%)
CMYK	cmyk(72.3%, 43.2%, 0%, 19.2%)
CIE-LAB	lab(49.55, 10.75, -51.72)
CIE-LCH	lch(49.55, 52.82, 281.74°)
OKLab	oklab(56.82% -0.0306 -0.1479)
OKLCH	oklch(56.82% 0.151 258.3)
XYZ	xyz(19.1852, 18.0466, 60.8528)
Luminance	0.1805 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3975CE #CE9239

analogous

#39C0CE #3975CE #4839CE

triadic

#3975CE #CE3975 #75CE39

tetradic

#3975CE #CE39C0 #CE9239 #39CE48

square

#3975CE #CE39C0 #CE9239 #39CE48

split-complementary

#3975CE #CE4839 #C0CE39

monochromatic

#1C3E71 #2859A2 #3975CE #6A97DA #9BB9E6

Accessibility & contrast

On white

4.56

#3975CE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#3975CE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3975CE

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3975CE	#FFFFFF	#000000	##000000
##3975CE	1.00	4.56	4.61	4.61
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#497DD1

Deuteranopia (green-blind)

#2E6FCC

Tritanopia (blue-blind)

#008A97

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3975ce;
/* rgb */ color: rgb(57, 117, 206);
/* oklch */ color: oklch(56.8% 0.151 258.3);

Tailwind

colors: {
  custom: {
    50: '#829cdd',
    500: '#3975ce',
    950: '#000000',
  },
}

SCSS

$custom: #3975ce;
$custom-light: #829cdd;
$custom-dark: #000000;

JSON

{
  "hex": "#3975ce",
  "rgb": {
    "r": 57,
    "g": 117,
    "b": 206
  },
  "hsl": {
    "h": 215.839,
    "s": 60.324,
    "l": 51.569
  },
  "oklch": {
    "l": 0.56824,
    "c": 0.15109,
    "h": 258.3
  },
  "luminance": 0.18049
}

Semantic roles & 50–950 ramp

primary

#3975CE

secondary

#D2B891

accent

#A344E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3975CE

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

Preview Lab → · Contrast checker → · Palette generator →