#4057C8#4057C8

#4057C8 is a mid, vivid blue. Relative luminance 0.121; OKLCH L 50.5% C 0.177 H 270.1°. Best body text is #FFFFFF at 6.15:1 contrast (WCAG AA passes).

Color values

HEX	#4057C8
RGB	rgb(64, 87, 200)
HSL	hsl(230, 55%, 52%)
HSV	hsv(230, 68%, 78%)
CMYK	cmyk(68%, 56.5%, 0%, 21.6%)
CIE-LAB	lab(41.34, 28.62, -61.50)
CIE-LCH	lch(41.34, 67.84, 294.96°)
OKLab	oklab(50.52% 0.0004 -0.1771)
OKLCH	oklch(50.52% 0.177 270.1)
XYZ	xyz(15.9443, 12.0750, 56.1228)
Luminance	0.1208 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4057C8 #C8B140

analogous

#409BC8 #4057C8 #6D40C8

triadic

#4057C8 #C84057 #57C840

tetradic

#4057C8 #C8409B #C8B140 #40C86D

square

#4057C8 #C8409B #C8B140 #40C86D

split-complementary

#4057C8 #C86D40 #9BC840

monochromatic

#202D6E #2D409D #4057C8 #7081D6 #9FABE3

Accessibility & contrast

On white

6.15

#4057C8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#4057C8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4057C8

6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4057C8	#FFFFFF	#000000	##FFFFFF
##4057C8	1.00	6.15	3.42	6.15
#FFFFFF	6.15	1.00	21.00	1.00
#000000	3.42	21.00	1.00	21.00
##FFFFFF	6.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068CC

Deuteranopia (green-blind)

#005CC6

Tritanopia (blue-blind)

#007387

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #4057c8;
/* rgb */ color: rgb(64, 87, 200);
/* oklch */ color: oklch(50.5% 0.177 270.1);

Tailwind

colors: {
  custom: {
    50: '#8586d9',
    500: '#4057c8',
    950: '#000000',
  },
}

SCSS

$custom: #4057c8;
$custom-light: #8586d9;
$custom-dark: #000000;

JSON

{
  "hex": "#4057c8",
  "rgb": {
    "r": 64,
    "g": 87,
    "b": 200
  },
  "hsl": {
    "h": 229.853,
    "s": 55.285,
    "l": 51.765
  },
  "oklch": {
    "l": 0.50522,
    "c": 0.17708,
    "h": 270.1
  },
  "luminance": 0.12077
}

Semantic roles & 50–950 ramp

primary

#4057C8

secondary

#D0C694

accent

#C549DF

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #4057C8

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

Preview Lab → · Contrast checker → · Palette generator →