#4139CB#4139CB

#4139CB is a mid, highly saturated blue. Relative luminance 0.084; OKLCH L 45.8% C 0.215 H 276.1°. Best body text is #FFFFFF at 7.86:1 contrast (WCAG AA passes).

Color values

HEX	#4139CB
RGB	rgb(65, 57, 203)
HSL	hsl(243, 58%, 51%)
HSV	hsv(243, 72%, 80%)
CMYK	cmyk(68%, 71.9%, 0%, 20.4%)
CIE-LAB	lab(34.72, 48.03, -74.06)
CIE-LCH	lch(34.72, 88.27, 302.97°)
OKLab	oklab(45.78% 0.0229 -0.214)
OKLCH	oklch(45.78% 0.215 276.1)
XYZ	xyz(14.4191, 8.3606, 57.3422)
Luminance	0.0836 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4139CB #C3CB39

analogous

#397ACB #4139CB #8A39CB

triadic

#4139CB #CB4139 #39CB41

tetradic

#4139CB #CB397A #C3CB39 #39CB8A

square

#4139CB #CB397A #C3CB39 #39CB8A

split-complementary

#4139CB #CB8A39 #7ACB39

monochromatic

#211D6D #30299D #4139CB #7069D8 #9E9AE4

Accessibility & contrast

On white

7.86

#4139CB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#4139CB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4139CB

7.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4139CB	#FFFFFF	#000000	##FFFFFF
##4139CB	1.00	7.86	2.67	7.86
#FFFFFF	7.86	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058CF

Deuteranopia (green-blind)

#004BC8

Tritanopia (blue-blind)

#00627E

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #4139cb;
/* rgb */ color: rgb(65, 57, 203);
/* oklch */ color: oklch(45.8% 0.215 276.1);

Tailwind

colors: {
  custom: {
    50: '#8871dc',
    500: '#4139cb',
    950: '#000000',
  },
}

SCSS

$custom: #4139cb;
$custom-light: #8871dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4139cb",
  "rgb": {
    "r": 65,
    "g": 57,
    "b": 203
  },
  "hsl": {
    "h": 243.288,
    "s": 58.4,
    "l": 50.98
  },
  "oklch": {
    "l": 0.4578,
    "c": 0.21522,
    "h": 276.1
  },
  "luminance": 0.08362
}

Semantic roles & 50–950 ramp

primary

#4139CB

secondary

#CDD090

accent

#E246D9

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #4139CB

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

Preview Lab → · Contrast checker → · Palette generator →