#4057D0#4057D0

#4057D0 is a mid, vivid blue. Relative luminance 0.125; OKLCH L 51.2% C 0.188 H 270.2°. Best body text is #FFFFFF at 6.01:1 contrast (WCAG AA passes).

Color values

HEX	#4057D0
RGB	rgb(64, 87, 208)
HSL	hsl(230, 61%, 53%)
HSV	hsv(230, 69%, 82%)
CMYK	cmyk(69.2%, 58.2%, 0%, 18.4%)
CIE-LAB	lab(41.94, 31.46, -65.14)
CIE-LCH	lch(41.94, 72.34, 295.77°)
OKLab	oklab(51.16% 0.0006 -0.1878)
OKLCH	oklch(51.16% 0.188 270.2)
XYZ	xyz(16.9038, 12.4588, 61.1762)
Luminance	0.1246 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4057D0 #D0B940

analogous

#409FD0 #4057D0 #7140D0

triadic

#4057D0 #D04057 #57D040

tetradic

#4057D0 #D0409F #D0B940 #40D071

square

#4057D0 #D0409F #D0B940 #40D071

split-complementary

#4057D0 #D07140 #9FD040

monochromatic

#1E2C78 #2A3EA9 #4057D0 #7182DC #A2ADE8

Accessibility & contrast

On white

6.01

#4057D0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.49

#4057D0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4057D0

6.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4057D0	#FFFFFF	#000000	##FFFFFF
##4057D0	1.00	6.01	3.49	6.01
#FFFFFF	6.01	1.00	21.00	1.00
#000000	3.49	21.00	1.00	21.00
##FFFFFF	6.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006AD4

Deuteranopia (green-blind)

#005DCE

Tritanopia (blue-blind)

#00758B

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #4057d0;
/* rgb */ color: rgb(64, 87, 208);
/* oklch */ color: oklch(51.2% 0.188 270.2);

Tailwind

colors: {
  custom: {
    50: '#8686df',
    500: '#4057d0',
    950: '#000000',
  },
}

SCSS

$custom: #4057d0;
$custom-light: #8686df;
$custom-dark: #000000;

JSON

{
  "hex": "#4057d0",
  "rgb": {
    "r": 64,
    "g": 87,
    "b": 208
  },
  "hsl": {
    "h": 230.417,
    "s": 60.504,
    "l": 53.333
  },
  "oklch": {
    "l": 0.51159,
    "c": 0.18777,
    "h": 270.2
  },
  "luminance": 0.1246
}

Semantic roles & 50–950 ramp

primary

#4057D0

secondary

#D5CB97

accent

#CA44E4

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0D0B15

muted

#7D7C83

Preview Lab

Preview with #4057D0

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

Preview Lab → · Contrast checker → · Palette generator →