#3951BF#3951BF

#3951BF is a mid, vivid blue. Relative luminance 0.105; OKLCH L 48.3% C 0.174 H 269.4°. Best body text is #FFFFFF at 6.77:1 contrast (WCAG AA passes).

Color values

HEX	#3951BF
RGB	rgb(57, 81, 191)
HSL	hsl(229, 54%, 49%)
HSV	hsv(229, 70%, 75%)
CMYK	cmyk(70.2%, 57.6%, 0%, 25.1%)
CIE-LAB	lab(38.75, 28.25, -60.49)
CIE-LCH	lch(38.75, 66.76, 295.04°)
OKLab	oklab(48.28% -0.0018 -0.1743)
OKLCH	oklch(48.28% 0.174 269.4)
XYZ	xyz(14.0305, 10.5149, 50.5703)
Luminance	0.1052 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3951BF #BFA739

analogous

#3994BF #3951BF #6439BF

triadic

#3951BF #BF3951 #51BF39

tetradic

#3951BF #BF3994 #BFA739 #39BF64

square

#3951BF #BF3994 #BFA739 #39BF64

split-complementary

#3951BF #BF6439 #94BF39

monochromatic

#1D2961 #2B3D90 #3951BF #6478D1 #93A1DF

Accessibility & contrast

On white

6.77

#3951BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#3951BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3951BF

6.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3951BF	#FFFFFF	#000000	##FFFFFF
##3951BF	1.00	6.77	3.10	6.77
#FFFFFF	6.77	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062C3

Deuteranopia (green-blind)

#0055BD

Tritanopia (blue-blind)

#006C80

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3951bf;
/* rgb */ color: rgb(57, 81, 191);
/* oklch */ color: oklch(48.3% 0.174 269.4);

Tailwind

colors: {
  custom: {
    50: '#8081d3',
    500: '#3951bf',
    950: '#000000',
  },
}

SCSS

$custom: #3951bf;
$custom-light: #8081d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3951bf",
  "rgb": {
    "r": 57,
    "g": 81,
    "b": 191
  },
  "hsl": {
    "h": 229.254,
    "s": 54.032,
    "l": 48.627
  },
  "oklch": {
    "l": 0.48279,
    "c": 0.17433,
    "h": 269.4
  },
  "luminance": 0.10516
}

Semantic roles & 50–950 ramp

primary

#3951BF

secondary

#CABF8A

accent

#C34ADD

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3951BF

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

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