#4057CC#4057CC

#4057CC is a mid, vivid blue. Relative luminance 0.123; OKLCH L 50.8% C 0.182 H 270.2°. Best body text is #FFFFFF at 6.08:1 contrast (WCAG AA passes).

Color values

HEX	#4057CC
RGB	rgb(64, 87, 204)
HSL	hsl(230, 58%, 53%)
HSV	hsv(230, 69%, 80%)
CMYK	cmyk(68.6%, 57.4%, 0%, 20%)
CIE-LAB	lab(41.63, 30.04, -63.33)
CIE-LCH	lch(41.63, 70.09, 295.38°)
OKLab	oklab(50.84% 0.0006 -0.1824)
OKLCH	oklch(50.84% 0.182 270.2)
XYZ	xyz(16.4179, 12.2644, 58.6171)
Luminance	0.1227 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4057CC #CCB540

analogous

#409DCC #4057CC #6F40CC

triadic

#4057CC #CC4057 #57CC40

tetradic

#4057CC #CC409D #CCB540 #40CC6F

square

#4057CC #CC409D #CCB540 #40CC6F

split-complementary

#4057CC #CC6F40 #9DCC40

monochromatic

#1F2D73 #2C3FA3 #4057CC #7081D9 #A1ACE6

Accessibility & contrast

On white

6.08

#4057CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.45

#4057CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4057CC

6.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4057CC	#FFFFFF	#000000	##FFFFFF
##4057CC	1.00	6.08	3.45	6.08
#FFFFFF	6.08	1.00	21.00	1.00
#000000	3.45	21.00	1.00	21.00
##FFFFFF	6.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069D0

Deuteranopia (green-blind)

#005CCA

Tritanopia (blue-blind)

#007489

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #4057cc;
/* rgb */ color: rgb(64, 87, 204);
/* oklch */ color: oklch(50.8% 0.182 270.2);

Tailwind

colors: {
  custom: {
    50: '#8686dc',
    500: '#4057cc',
    950: '#000000',
  },
}

SCSS

$custom: #4057cc;
$custom-light: #8686dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4057cc",
  "rgb": {
    "r": 64,
    "g": 87,
    "b": 204
  },
  "hsl": {
    "h": 230.143,
    "s": 57.851,
    "l": 52.549
  },
  "oklch": {
    "l": 0.50839,
    "c": 0.18245,
    "h": 270.2
  },
  "luminance": 0.12266
}

Semantic roles & 50–950 ramp

primary

#4057CC

secondary

#D2C895

accent

#C847E1

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #4057CC

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

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