#3950B8#3950B8

#3950B8 is a mid, vivid blue. Relative luminance 0.101; OKLCH L 47.5% C 0.166 H 269.6°. Best body text is #FFFFFF at 6.97:1 contrast (WCAG AA passes).

Color values

HEX	#3950B8
RGB	rgb(57, 80, 184)
HSL	hsl(229, 53%, 47%)
HSV	hsv(229, 69%, 72%)
CMYK	cmyk(69%, 56.5%, 0%, 27.8%)
CIE-LAB	lab(37.96, 26.37, -57.67)
CIE-LCH	lch(37.96, 63.41, 294.57°)
OKLab	oklab(47.52% -0.0012 -0.166)
OKLCH	oklch(47.52% 0.166 269.6)
XYZ	xyz(13.2048, 10.0666, 46.5853)
Luminance	0.1007 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3950B8 #B8A139

analogous

#398FB8 #3950B8 #6239B8

triadic

#3950B8 #B83950 #50B839

tetradic

#3950B8 #B8398F #B8A139 #39B862

square

#3950B8 #B8398F #B8A139 #39B862

split-complementary

#3950B8 #B86239 #8FB839

monochromatic

#1C275B #2B3C89 #3950B8 #6074CE #8F9DDC

Accessibility & contrast

On white

6.97

#3950B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#3950B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3950B8

6.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3950B8	#FFFFFF	#000000	##FFFFFF
##3950B8	1.00	6.97	3.01	6.97
#FFFFFF	6.97	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FBC

Deuteranopia (green-blind)

#0054B6

Tritanopia (blue-blind)

#00697C

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3950b8;
/* rgb */ color: rgb(57, 80, 184);
/* oklch */ color: oklch(47.5% 0.166 269.6);

Tailwind

colors: {
  custom: {
    50: '#7f80ce',
    500: '#3950b8',
    950: '#000000',
  },
}

SCSS

$custom: #3950b8;
$custom-light: #7f80ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3950b8",
  "rgb": {
    "r": 57,
    "g": 80,
    "b": 184
  },
  "hsl": {
    "h": 229.134,
    "s": 52.697,
    "l": 47.255
  },
  "oklch": {
    "l": 0.47522,
    "c": 0.16604,
    "h": 269.6
  },
  "luminance": 0.10068
}

Semantic roles & 50–950 ramp

primary

#3950B8

secondary

#C7BB86

accent

#C24CDC

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3950B8

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

Preview Lab → · Contrast checker → · Palette generator →