#4050CB#4050CB

#4050CB is a mid, vivid blue. Relative luminance 0.111; OKLCH L 49.5% C 0.190 H 271.8°. Best body text is #FFFFFF at 6.51:1 contrast (WCAG AA passes).

Color values

HEX	#4050CB
RGB	rgb(64, 80, 203)
HSL	hsl(233, 57%, 52%)
HSV	hsv(233, 68%, 80%)
CMYK	cmyk(68.5%, 60.6%, 0%, 20.4%)
CIE-LAB	lab(39.81, 34.12, -65.72)
CIE-LCH	lch(39.81, 74.05, 297.44°)
OKLab	oklab(49.46% 0.0061 -0.1895)
OKLCH	oklch(49.46% 0.19 271.8)
XYZ	xyz(15.7589, 11.1376, 57.8076)
Luminance	0.1114 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4050CB #CBBB40

analogous

#4095CB #4050CB #7640CB

triadic

#4050CB #CB4050 #50CB40

tetradic

#4050CB #CB4095 #CBBB40 #40CB76

square

#4050CB #CB4095 #CBBB40 #40CB76

split-complementary

#4050CB #CB7640 #95CB40

monochromatic

#1F2872 #2C3AA2 #4050CB #707CD8 #A0A8E5

Accessibility & contrast

On white

6.51

#4050CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.23

#4050CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4050CB

6.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4050CB	#FFFFFF	#000000	##FFFFFF
##4050CB	1.00	6.51	3.23	6.51
#FFFFFF	6.51	1.00	21.00	1.00
#000000	3.23	21.00	1.00	21.00
##FFFFFF	6.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064CF

Deuteranopia (green-blind)

#0058C9

Tritanopia (blue-blind)

#006F86

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #4050cb;
/* rgb */ color: rgb(64, 80, 203);
/* oklch */ color: oklch(49.5% 0.190 271.8);

Tailwind

colors: {
  custom: {
    50: '#8681dc',
    500: '#4050cb',
    950: '#000000',
  },
}

SCSS

$custom: #4050cb;
$custom-light: #8681dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4050cb",
  "rgb": {
    "r": 64,
    "g": 80,
    "b": 203
  },
  "hsl": {
    "h": 233.094,
    "s": 57.202,
    "l": 52.353
  },
  "oklch": {
    "l": 0.49461,
    "c": 0.18965,
    "h": 271.8
  },
  "luminance": 0.11139
}

Semantic roles & 50–950 ramp

primary

#4050CB

secondary

#D2CB95

accent

#CF47E0

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0D0A15

muted

#7D7C83

Preview Lab

Preview with #4050CB

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

Preview Lab → · Contrast checker → · Palette generator →