#3959CB#3959CB

#3959CB is a mid, vivid blue. Relative luminance 0.123; OKLCH L 50.8% C 0.181 H 267.6°. Best body text is #FFFFFF at 6.06:1 contrast (WCAG AA passes).

Color values

HEX	#3959CB
RGB	rgb(57, 89, 203)
HSL	hsl(227, 58%, 51%)
HSV	hsv(227, 72%, 80%)
CMYK	cmyk(71.9%, 56.2%, 0%, 20.4%)
CIE-LAB	lab(41.73, 27.46, -62.62)
CIE-LCH	lch(41.73, 68.37, 293.68°)
OKLab	oklab(50.79% -0.0076 -0.1805)
OKLCH	oklch(50.79% 0.181 267.6)
XYZ	xyz(16.0355, 12.3247, 58.0221)
Luminance	0.1233 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3959CB #CBAB39

analogous

#39A2CB #3959CB #6239CB

triadic

#3959CB #CB3959 #59CB39

tetradic

#3959CB #CB39A2 #CBAB39 #39CB62

square

#3959CB #CB39A2 #CBAB39 #39CB62

split-complementary

#3959CB #CB6239 #A2CB39

monochromatic

#1D2E6D #29439D #3959CB #6982D8 #9AAAE4

Accessibility & contrast

On white

6.06

#3959CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#3959CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3959CB

6.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3959CB	#FFFFFF	#000000	##FFFFFF
##3959CB	1.00	6.06	3.47	6.06
#FFFFFF	6.06	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069CF

Deuteranopia (green-blind)

#005CC9

Tritanopia (blue-blind)

#007589

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3959cb;
/* rgb */ color: rgb(57, 89, 203);
/* oklch */ color: oklch(50.8% 0.181 267.6);

Tailwind

colors: {
  custom: {
    50: '#8287dc',
    500: '#3959cb',
    950: '#000000',
  },
}

SCSS

$custom: #3959cb;
$custom-light: #8287dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3959cb",
  "rgb": {
    "r": 57,
    "g": 89,
    "b": 203
  },
  "hsl": {
    "h": 226.849,
    "s": 58.4,
    "l": 50.98
  },
  "oklch": {
    "l": 0.50792,
    "c": 0.18063,
    "h": 267.6
  },
  "luminance": 0.12326
}

Semantic roles & 50–950 ramp

primary

#3959CB

secondary

#D0C290

accent

#C046E2

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3959CB

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

Preview Lab → · Contrast checker → · Palette generator →