#3977F2#3977F2

#3977F2 is a mid, vivid blue. Relative luminance 0.205; OKLCH L 59.7% C 0.196 H 262.1°. Best body text is #000000 at 5.09:1 contrast (WCAG AA passes).

Color values

HEX	#3977F2
RGB	rgb(57, 119, 242)
HSL	hsl(220, 88%, 59%)
HSV	hsv(220, 76%, 95%)
CMYK	cmyk(76.4%, 50.8%, 0%, 5.1%)
CIE-LAB	lab(52.37, 22.68, -67.47)
CIE-LCH	lch(52.37, 71.18, 288.58°)
OKLab	oklab(59.71% -0.0268 -0.1943)
OKLCH	oklch(59.71% 0.196 262.1)
XYZ	xyz(24.3054, 20.4715, 86.6576)
Luminance	0.2047 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3977F2 #F2B439

analogous

#39D3F2 #3977F2 #5739F2

triadic

#3977F2 #F23977 #77F239

tetradic

#3977F2 #F239D3 #F2B439 #39F257

square

#3977F2 #F239D3 #F2B439 #39F257

split-complementary

#3977F2 #F25739 #D3F239

monochromatic

#0B3FA6 #0F55DF #3977F2 #729EF6 #ACC6FA

Accessibility & contrast

On white

4.12

#3977F2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.09

#3977F2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3977F2

5.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3977F2	#FFFFFF	#000000	##000000
##3977F2	1.00	4.12	5.09	5.09
#FFFFFF	4.12	1.00	21.00	21.00
#000000	5.09	21.00	1.00	1.00
##000000	5.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2586F6

Deuteranopia (green-blind)

#0075F0

Tritanopia (blue-blind)

#0095A9

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #3977f2;
/* rgb */ color: rgb(57, 119, 242);
/* oklch */ color: oklch(59.7% 0.196 262.1);

Tailwind

colors: {
  custom: {
    50: '#899df7',
    500: '#3977f2',
    950: '#000000',
  },
}

SCSS

$custom: #3977f2;
$custom-light: #899df7;
$custom-dark: #000000;

JSON

{
  "hex": "#3977f2",
  "rgb": {
    "r": 57,
    "g": 119,
    "b": 242
  },
  "hsl": {
    "h": 219.892,
    "s": 87.678,
    "l": 58.627
  },
  "oklch": {
    "l": 0.59711,
    "c": 0.1961,
    "h": 262.1
  },
  "luminance": 0.20474
}

Semantic roles & 50–950 ramp

primary

#3977F2

secondary

#E8CF9F

accent

#B72AFE

background

#F9F9FF

surface

#F2F2FF

border

#CCCCD7

text

#0D0E17

muted

#7E7E85

Preview Lab

Preview with #3977F2

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

Preview Lab → · Contrast checker → · Palette generator →