#4057D3#4057D3

#4057D3 is a mid, vivid blue. Relative luminance 0.126; OKLCH L 51.4% C 0.192 H 270.2°. Best body text is #FFFFFF at 5.96:1 contrast (WCAG AA passes).

Color values

HEX	#4057D3
RGB	rgb(64, 87, 211)
HSL	hsl(231, 63%, 54%)
HSV	hsv(231, 70%, 83%)
CMYK	cmyk(69.7%, 58.8%, 0%, 17.3%)
CIE-LAB	lab(42.17, 32.51, -66.49)
CIE-LCH	lch(42.17, 74.02, 296.06°)
OKLab	oklab(51.4% 0.0007 -0.1917)
OKLCH	oklch(51.4% 0.192 270.2)
XYZ	xyz(17.2764, 12.6078, 63.1385)
Luminance	0.1261 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4057D3 #D3BC40

analogous

#40A1D3 #4057D3 #7340D3

triadic

#4057D3 #D34057 #57D340

tetradic

#4057D3 #D340A1 #D3BC40 #40D373

square

#4057D3 #D340A1 #D3BC40 #40D373

split-complementary

#4057D3 #D37340 #A1D340

monochromatic

#1D2C7C #283DAE #4057D3 #7283DE #A3AFEA

Accessibility & contrast

On white

5.96

#4057D3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#4057D3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4057D3

5.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4057D3	#FFFFFF	#000000	##FFFFFF
##4057D3	1.00	5.96	3.52	5.96
#FFFFFF	5.96	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006AD7

Deuteranopia (green-blind)

#005DD1

Tritanopia (blue-blind)

#00768C

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #4057d3;
/* rgb */ color: rgb(64, 87, 211);
/* oklch */ color: oklch(51.4% 0.192 270.2);

Tailwind

colors: {
  custom: {
    50: '#8786e1',
    500: '#4057d3',
    950: '#000000',
  },
}

SCSS

$custom: #4057d3;
$custom-light: #8786e1;
$custom-dark: #000000;

JSON

{
  "hex": "#4057d3",
  "rgb": {
    "r": 64,
    "g": 87,
    "b": 211
  },
  "hsl": {
    "h": 230.612,
    "s": 62.553,
    "l": 53.922
  },
  "oklch": {
    "l": 0.51403,
    "c": 0.19174,
    "h": 270.2
  },
  "luminance": 0.1261
}

Semantic roles & 50–950 ramp

primary

#4057D3

secondary

#D7CD98

accent

#CC42E6

background

#F9F8FD

surface

#F1EFFB

border

#CBCAD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #4057D3

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

Preview Lab → · Contrast checker → · Palette generator →