#4051CC#4051CC

#4051CC is a mid, vivid blue. Relative luminance 0.113; OKLCH L 49.7% C 0.190 H 271.6°. Best body text is #FFFFFF at 6.43:1 contrast (WCAG AA passes).

Color values

HEX	#4051CC
RGB	rgb(64, 81, 204)
HSL	hsl(233, 58%, 53%)
HSV	hsv(233, 69%, 80%)
CMYK	cmyk(68.6%, 60.3%, 0%, 20%)
CIE-LAB	lab(40.14, 33.84, -65.77)
CIE-LCH	lch(40.14, 73.96, 297.23°)
OKLab	oklab(49.73% 0.0053 -0.1897)
OKLCH	oklch(49.73% 0.19 271.6)
XYZ	xyz(15.9522, 11.3330, 58.4618)
Luminance	0.1133 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4051CC #CCBB40

analogous

#4097CC #4051CC #7540CC

triadic

#4051CC #CC4051 #51CC40

tetradic

#4051CC #CC4097 #CCBB40 #40CC75

square

#4051CC #CC4097 #CCBB40 #40CC75

split-complementary

#4051CC #CC7540 #97CC40

monochromatic

#1F2973 #2C3AA3 #4051CC #707DD9 #A1A9E6

Accessibility & contrast

On white

6.43

#4051CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#4051CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4051CC

6.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4051CC	#FFFFFF	#000000	##FFFFFF
##4051CC	1.00	6.43	3.27	6.43
#FFFFFF	6.43	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0065D0

Deuteranopia (green-blind)

#0058CA

Tritanopia (blue-blind)

#007087

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #4051cc;
/* rgb */ color: rgb(64, 81, 204);
/* oklch */ color: oklch(49.7% 0.190 271.6);

Tailwind

colors: {
  custom: {
    50: '#8681dc',
    500: '#4051cc',
    950: '#000000',
  },
}

SCSS

$custom: #4051cc;
$custom-light: #8681dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4051cc",
  "rgb": {
    "r": 64,
    "g": 81,
    "b": 204
  },
  "hsl": {
    "h": 232.714,
    "s": 57.851,
    "l": 52.549
  },
  "oklch": {
    "l": 0.49725,
    "c": 0.18975,
    "h": 271.6
  },
  "luminance": 0.11334
}

Semantic roles & 50–950 ramp

primary

#4051CC

secondary

#D2CB95

accent

#CE47E1

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0D0A15

muted

#7D7C83

Preview Lab

Preview with #4051CC

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

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