#3979F2#3979F2

#3979F2 is a mid, vivid blue. Relative luminance 0.210; OKLCH L 60.1% C 0.194 H 261.6°. Best body text is #000000 at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#3979F2
RGB	rgb(57, 121, 242)
HSL	hsl(219, 88%, 59%)
HSV	hsv(219, 76%, 95%)
CMYK	cmyk(76.4%, 50%, 0%, 5.1%)
CIE-LAB	lab(52.90, 21.44, -66.61)
CIE-LCH	lch(52.90, 69.98, 287.84°)
OKLab	oklab(60.12% -0.0283 -0.1917)
OKLCH	oklch(60.12% 0.194 261.6)
XYZ	xyz(24.5460, 20.9526, 86.7378)
Luminance	0.2095 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3979F2 #F2B239

analogous

#39D6F2 #3979F2 #5539F2

triadic

#3979F2 #F23979 #79F239

tetradic

#3979F2 #F239D6 #F2B239 #39F255

square

#3979F2 #F239D6 #F2B239 #39F255

split-complementary

#3979F2 #F25539 #D6F239

monochromatic

#0B40A6 #0F57DF #3979F2 #72A0F6 #ACC7FA

Accessibility & contrast

On white

4.05

#3979F2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.19

#3979F2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3979F2

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3979F2	#FFFFFF	#000000	##000000
##3979F2	1.00	4.05	5.19	5.19
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.19	21.00	1.00	1.00
##000000	5.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C87F6

Deuteranopia (green-blind)

#0076F0

Tritanopia (blue-blind)

#0096AA

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #3979f2;
/* rgb */ color: rgb(57, 121, 242);
/* oklch */ color: oklch(60.1% 0.194 261.6);

Tailwind

colors: {
  custom: {
    50: '#899ff7',
    500: '#3979f2',
    950: '#000000',
  },
}

SCSS

$custom: #3979f2;
$custom-light: #899ff7;
$custom-dark: #000000;

JSON

{
  "hex": "#3979f2",
  "rgb": {
    "r": 57,
    "g": 121,
    "b": 242
  },
  "hsl": {
    "h": 219.243,
    "s": 87.678,
    "l": 58.627
  },
  "oklch": {
    "l": 0.60116,
    "c": 0.19376,
    "h": 261.6
  },
  "luminance": 0.20955
}

Semantic roles & 50–950 ramp

primary

#3979F2

secondary

#E8CF9F

accent

#B52AFE

background

#F9F9FF

surface

#F2F2FF

border

#CCCCD7

text

#0D0E17

muted

#7E7E85

Preview Lab

Preview with #3979F2

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

Preview Lab → · Contrast checker → · Palette generator →