#3959B9#3959B9

#3959B9 is a mid, vivid blue. Relative luminance 0.115; OKLCH L 49.4% C 0.156 H 266.7°. Best body text is #FFFFFF at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#3959B9
RGB	rgb(57, 89, 185)
HSL	hsl(225, 53%, 47%)
HSV	hsv(225, 69%, 73%)
CMYK	cmyk(69.2%, 51.9%, 0%, 27.5%)
CIE-LAB	lab(40.44, 20.88, -54.25)
CIE-LCH	lch(40.44, 58.13, 291.06°)
OKLab	oklab(49.41% -0.0089 -0.1558)
OKLCH	oklch(49.41% 0.156 266.7)
XYZ	xyz(14.0136, 11.5160, 47.3738)
Luminance	0.1152 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3959B9 #B99939

analogous

#3999B9 #3959B9 #5939B9

triadic

#3959B9 #B93959 #59B939

tetradic

#3959B9 #B93999 #B99939 #39B959

square

#3959B9 #B93999 #B99939 #39B959

split-complementary

#3959B9 #B95939 #99B939

monochromatic

#1C2C5B #2B428A #3959B9 #617CCE #90A3DD

Accessibility & contrast

On white

6.36

#3959B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#3959B9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3959B9

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3959B9	#FFFFFF	#000000	##FFFFFF
##3959B9	1.00	6.36	3.30	6.36
#FFFFFF	6.36	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D65BC

Deuteranopia (green-blind)

#005AB7

Tritanopia (blue-blind)

#007080

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3959b9;
/* rgb */ color: rgb(57, 89, 185);
/* oklch */ color: oklch(49.4% 0.156 266.7);

Tailwind

colors: {
  custom: {
    50: '#7f87cf',
    500: '#3959b9',
    950: '#000000',
  },
}

SCSS

$custom: #3959b9;
$custom-light: #7f87cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3959b9",
  "rgb": {
    "r": 57,
    "g": 89,
    "b": 185
  },
  "hsl": {
    "h": 225,
    "s": 52.893,
    "l": 47.451
  },
  "oklch": {
    "l": 0.49409,
    "c": 0.1561,
    "h": 266.7
  },
  "luminance": 0.11517
}

Semantic roles & 50–950 ramp

primary

#3959B9

secondary

#C8B786

accent

#B84BDC

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3959B9

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

Preview Lab → · Contrast checker → · Palette generator →