#3959B0#3959B0

#3959B0 is a mid, vivid blue. Relative luminance 0.111; OKLCH L 48.8% C 0.144 H 266.0°. Best body text is #FFFFFF at 6.50:1 contrast (WCAG AA passes).

Color values

HEX	#3959B0
RGB	rgb(57, 89, 176)
HSL	hsl(224, 51%, 46%)
HSV	hsv(224, 68%, 69%)
CMYK	cmyk(67.6%, 49.4%, 0%, 31%)
CIE-LAB	lab(39.83, 17.59, -49.94)
CIE-LCH	lch(39.83, 52.95, 289.41°)
OKLab	oklab(48.75% -0.0099 -0.1432)
OKLCH	oklch(48.75% 0.144 266)
XYZ	xyz(13.0935, 11.1479, 42.5276)
Luminance	0.1115 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3959B0 #B09039

analogous

#3994B0 #3959B0 #5539B0

triadic

#3959B0 #B03959 #59B039

tetradic

#3959B0 #B03994 #B09039 #39B055

square

#3959B0 #B03994 #B09039 #39B055

split-complementary

#3959B0 #B05539 #94B039

monochromatic

#1B2A54 #2A4282 #3959B0 #5C7ACA #8A9FD9

Accessibility & contrast

On white

6.50

#3959B0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.23

#3959B0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3959B0

6.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3959B0	#FFFFFF	#000000	##FFFFFF
##3959B0	1.00	6.50	3.23	6.50
#FFFFFF	6.50	1.00	21.00	1.00
#000000	3.23	21.00	1.00	21.00
##FFFFFF	6.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2964B3

Deuteranopia (green-blind)

#0759AE

Tritanopia (blue-blind)

#006D7C

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3959b0;
/* rgb */ color: rgb(57, 89, 176);
/* oklch */ color: oklch(48.8% 0.144 266.0);

Tailwind

colors: {
  custom: {
    50: '#7d87c8',
    500: '#3959b0',
    950: '#000000',
  },
}

SCSS

$custom: #3959b0;
$custom-light: #7d87c8;
$custom-dark: #000000;

JSON

{
  "hex": "#3959b0",
  "rgb": {
    "r": 57,
    "g": 89,
    "b": 176
  },
  "hsl": {
    "h": 223.866,
    "s": 51.073,
    "l": 45.686
  },
  "oklch": {
    "l": 0.48753,
    "c": 0.14351,
    "h": 266
  },
  "luminance": 0.11149
}

Semantic roles & 50–950 ramp

primary

#3959B0

secondary

#C4B281

accent

#B54DDB

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3959B0

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

Preview Lab → · Contrast checker → · Palette generator →