#4057D5#4057D5

#4057D5 is a mid, vivid blue. Relative luminance 0.127; OKLCH L 51.6% C 0.194 H 270.2°. Best body text is #FFFFFF at 5.93:1 contrast (WCAG AA passes).

Color values

HEX	#4057D5
RGB	rgb(64, 87, 213)
HSL	hsl(231, 64%, 54%)
HSV	hsv(231, 70%, 84%)
CMYK	cmyk(70%, 59.2%, 0%, 16.5%)
CIE-LAB	lab(42.32, 33.22, -67.39)
CIE-LCH	lch(42.32, 75.13, 296.24°)
OKLab	oklab(51.57% 0.0007 -0.1944)
OKLCH	oklch(51.57% 0.194 270.2)
XYZ	xyz(17.5287, 12.7087, 64.4671)
Luminance	0.1271 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4057D5 #D5BE40

analogous

#40A2D5 #4057D5 #7440D5

triadic

#4057D5 #D54057 #57D540

tetradic

#4057D5 #D540A2 #D5BE40 #40D574

square

#4057D5 #D540A2 #D5BE40 #40D574

split-complementary

#4057D5 #D57440 #A2D540

monochromatic

#1C2B7F #273CB1 #4057D5 #7283E0 #A4AFEB

Accessibility & contrast

On white

5.93

#4057D5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#4057D5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4057D5

5.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4057D5	#FFFFFF	#000000	##FFFFFF
##4057D5	1.00	5.93	3.54	5.93
#FFFFFF	5.93	1.00	21.00	1.00
#000000	3.54	21.00	1.00	21.00
##FFFFFF	5.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006BD9

Deuteranopia (green-blind)

#005DD3

Tritanopia (blue-blind)

#00778D

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #4057d5;
/* rgb */ color: rgb(64, 87, 213);
/* oklch */ color: oklch(51.6% 0.194 270.2);

Tailwind

colors: {
  custom: {
    50: '#8786e3',
    500: '#4057d5',
    950: '#000000',
  },
}

SCSS

$custom: #4057d5;
$custom-light: #8786e3;
$custom-dark: #000000;

JSON

{
  "hex": "#4057d5",
  "rgb": {
    "r": 64,
    "g": 87,
    "b": 213
  },
  "hsl": {
    "h": 230.738,
    "s": 63.948,
    "l": 54.314
  },
  "oklch": {
    "l": 0.51566,
    "c": 0.19437,
    "h": 270.2
  },
  "luminance": 0.1271
}

Semantic roles & 50–950 ramp

primary

#4057D5

secondary

#D8CE99

accent

#CD41E7

background

#F9F8FE

surface

#F1EFFC

border

#CBCAD5

text

#0D0B16

muted

#7E7C84

Preview Lab

Preview with #4057D5

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

Preview Lab → · Contrast checker → · Palette generator →