#3951B2#3951B2

#3951B2 is a mid, vivid blue. Relative luminance 0.100; OKLCH L 47.2% C 0.157 H 269.1°. Best body text is #FFFFFF at 7.01:1 contrast (WCAG AA passes).

Color values

HEX	#3951B2
RGB	rgb(57, 81, 178)
HSL	hsl(228, 51%, 46%)
HSV	hsv(228, 68%, 70%)
CMYK	cmyk(68%, 54.5%, 0%, 30.2%)
CIE-LAB	lab(37.78, 23.54, -54.42)
CIE-LCH	lch(37.78, 59.29, 293.39°)
OKLab	oklab(47.25% -0.0024 -0.1565)
OKLCH	oklch(47.25% 0.157 269.1)
XYZ	xyz(12.6629, 9.9679, 43.3675)
Luminance	0.0997 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3951B2 #B29A39

analogous

#398DB2 #3951B2 #5D39B2

triadic

#3951B2 #B23951 #51B239

tetradic

#3951B2 #B2398D #B29A39 #39B25D

square

#3951B2 #B2398D #B29A39 #39B25D

split-complementary

#3951B2 #B25D39 #8DB239

monochromatic

#1B2755 #2A3C84 #3951B2 #5D73CB #8B9BDA

Accessibility & contrast

On white

7.01

#3951B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.99

#3951B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3951B2

7.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3951B2	#FFFFFF	#000000	##FFFFFF
##3951B2	1.00	7.01	2.99	7.01
#FFFFFF	7.01	1.00	21.00	1.00
#000000	2.99	21.00	1.00	21.00
##FFFFFF	7.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#055FB5

Deuteranopia (green-blind)

#0054B0

Tritanopia (blue-blind)

#006879

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3951b2;
/* rgb */ color: rgb(57, 81, 178);
/* oklch */ color: oklch(47.2% 0.157 269.1);

Tailwind

colors: {
  custom: {
    50: '#7e81ca',
    500: '#3951b2',
    950: '#000000',
  },
}

SCSS

$custom: #3951b2;
$custom-light: #7e81ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3951b2",
  "rgb": {
    "r": 57,
    "g": 81,
    "b": 178
  },
  "hsl": {
    "h": 228.099,
    "s": 51.489,
    "l": 46.078
  },
  "oklch": {
    "l": 0.47249,
    "c": 0.1565,
    "h": 269.1
  },
  "luminance": 0.09969
}

Semantic roles & 50–950 ramp

primary

#3951B2

secondary

#C4B782

accent

#BF4DDB

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3951B2

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

Preview Lab → · Contrast checker → · Palette generator →