#3959B7#3959B7

#3959B7 is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.3% C 0.153 H 266.6°. Best body text is #FFFFFF at 6.39:1 contrast (WCAG AA passes).

Color values

HEX	#3959B7
RGB	rgb(57, 89, 183)
HSL	hsl(225, 53%, 47%)
HSV	hsv(225, 69%, 72%)
CMYK	cmyk(68.9%, 51.4%, 0%, 28.2%)
CIE-LAB	lab(40.30, 20.15, -53.30)
CIE-LCH	lch(40.30, 56.98, 290.71°)
OKLab	oklab(49.26% -0.0091 -0.153)
OKLCH	oklch(49.26% 0.153 266.6)
XYZ	xyz(13.8040, 11.4321, 46.2697)
Luminance	0.1143 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3959B7 #B79739

analogous

#3998B7 #3959B7 #5839B7

triadic

#3959B7 #B73959 #59B739

tetradic

#3959B7 #B73998 #B79739 #39B758

square

#3959B7 #B73998 #B79739 #39B758

split-complementary

#3959B7 #B75839 #98B739

monochromatic

#1C2C5A #2A4288 #3959B7 #607CCD #8EA2DC

Accessibility & contrast

On white

6.39

#3959B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#3959B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3959B7

6.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3959B7	#FFFFFF	#000000	##FFFFFF
##3959B7	1.00	6.39	3.29	6.39
#FFFFFF	6.39	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2065BA

Deuteranopia (green-blind)

#005AB5

Tritanopia (blue-blind)

#006F7F

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3959b7;
/* rgb */ color: rgb(57, 89, 183);
/* oklch */ color: oklch(49.3% 0.153 266.6);

Tailwind

colors: {
  custom: {
    50: '#7e87cd',
    500: '#3959b7',
    950: '#000000',
  },
}

SCSS

$custom: #3959b7;
$custom-light: #7e87cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3959b7",
  "rgb": {
    "r": 57,
    "g": 89,
    "b": 183
  },
  "hsl": {
    "h": 224.762,
    "s": 52.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.49261,
    "c": 0.15332,
    "h": 266.6
  },
  "luminance": 0.11434
}

Semantic roles & 50–950 ramp

primary

#3959B7

secondary

#C7B685

accent

#B74CDC

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3959B7

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

Preview Lab → · Contrast checker → · Palette generator →