#3975DA#3975DA

#3975DA is a mid, vivid blue. Relative luminance 0.187; OKLCH L 57.6% C 0.167 H 260.2°. Best body text is #000000 at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#3975DA
RGB	rgb(57, 117, 218)
HSL	hsl(218, 69%, 54%)
HSV	hsv(218, 74%, 85%)
CMYK	cmyk(73.9%, 46.3%, 0%, 14.5%)
CIE-LAB	lab(50.28, 15.14, -57.37)
CIE-LCH	lch(50.28, 59.34, 284.78°)
OKLab	oklab(57.62% -0.0285 -0.1646)
OKLCH	oklch(57.62% 0.167 260.2)
XYZ	xyz(20.6989, 18.6521, 68.8254)
Luminance	0.1865 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3975DA #DA9E39

analogous

#39C6DA #3975DA #4E39DA

triadic

#3975DA #DA3975 #75DA39

tetradic

#3975DA #DA39C6 #DA9E39 #39DA4E

square

#3975DA #DA39C6 #DA9E39 #39DA4E

split-complementary

#3975DA #DA4E39 #C6DA39

monochromatic

#183F81 #2258B4 #3975DA #6D99E4 #A0BDED

Accessibility & contrast

On white

4.44

#3975DA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.73

#3975DA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3975DA

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3975DA	#FFFFFF	#000000	##000000
##3975DA	1.00	4.44	4.73	4.73
#FFFFFF	4.44	1.00	21.00	21.00
#000000	4.73	21.00	1.00	1.00
##000000	4.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F80DE

Deuteranopia (green-blind)

#1771D8

Tritanopia (blue-blind)

#008D9D

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3975da;
/* rgb */ color: rgb(57, 117, 218);
/* oklch */ color: oklch(57.6% 0.167 260.2);

Tailwind

colors: {
  custom: {
    50: '#849ce6',
    500: '#3975da',
    950: '#000000',
  },
}

SCSS

$custom: #3975da;
$custom-light: #849ce6;
$custom-dark: #000000;

JSON

{
  "hex": "#3975da",
  "rgb": {
    "r": 57,
    "g": 117,
    "b": 218
  },
  "hsl": {
    "h": 217.64,
    "s": 68.511,
    "l": 53.922
  },
  "oklch": {
    "l": 0.57617,
    "c": 0.16702,
    "h": 260.2
  },
  "luminance": 0.18654
}

Semantic roles & 50–950 ramp

primary

#3975DA

secondary

#DAC095

accent

#AA3CEB

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #3975DA

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

Preview Lab → · Contrast checker → · Palette generator →