#3951D2#3951D2

#3951D2 is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.9% C 0.199 H 269.5°. Best body text is #FFFFFF at 6.40:1 contrast (WCAG AA passes).

Color values

HEX	#3951D2
RGB	rgb(57, 81, 210)
HSL	hsl(231, 63%, 52%)
HSV	hsv(231, 73%, 82%)
CMYK	cmyk(72.9%, 61.4%, 0%, 17.6%)
CIE-LAB	lab(40.26, 35.07, -69.05)
CIE-LCH	lch(40.26, 77.44, 296.93°)
OKLab	oklab(49.87% -0.0017 -0.1995)
OKLCH	oklch(49.87% 0.199 269.5)
XYZ	xyz(16.2586, 11.4062, 62.3050)
Luminance	0.1141 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3951D2 #D2BA39

analogous

#399ED2 #3951D2 #6D39D2

triadic

#3951D2 #D23951 #51D239

tetradic

#3951D2 #D2399E #D2BA39 #39D26D

square

#3951D2 #D2399E #D2BA39 #39D26D

split-complementary

#3951D2 #D26D39 #9ED239

monochromatic

#1B2976 #263AA8 #3951D2 #6B7DDD #9DA9E9

Accessibility & contrast

On white

6.40

#3951D2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#3951D2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3951D2

6.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3951D2	#FFFFFF	#000000	##FFFFFF
##3951D2	1.00	6.40	3.28	6.40
#FFFFFF	6.40	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066D6

Deuteranopia (green-blind)

#0058D0

Tritanopia (blue-blind)

#00728A

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3951d2;
/* rgb */ color: rgb(57, 81, 210);
/* oklch */ color: oklch(49.9% 0.199 269.5);

Tailwind

colors: {
  custom: {
    50: '#8481e1',
    500: '#3951d2',
    950: '#000000',
  },
}

SCSS

$custom: #3951d2;
$custom-light: #8481e1;
$custom-dark: #000000;

JSON

{
  "hex": "#3951d2",
  "rgb": {
    "r": 57,
    "g": 81,
    "b": 210
  },
  "hsl": {
    "h": 230.588,
    "s": 62.963,
    "l": 52.353
  },
  "oklch": {
    "l": 0.49867,
    "c": 0.19947,
    "h": 269.5
  },
  "luminance": 0.11408
}

Semantic roles & 50–950 ramp

primary

#3951D2

secondary

#D5CA92

accent

#CC42E6

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0D0A15

muted

#7D7C83

Preview Lab

Preview with #3951D2

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

Preview Lab → · Contrast checker → · Palette generator →