#4057C7#4057C7

#4057C7 is a mid, vivid blue. Relative luminance 0.120; OKLCH L 50.4% C 0.176 H 270.1°. Best body text is #FFFFFF at 6.17:1 contrast (WCAG AA passes).

Color values

HEX	#4057C7
RGB	rgb(64, 87, 199)
HSL	hsl(230, 55%, 52%)
HSV	hsv(230, 68%, 78%)
CMYK	cmyk(67.8%, 56.3%, 0%, 22%)
CIE-LAB	lab(41.26, 28.27, -61.05)
CIE-LCH	lch(41.26, 67.27, 294.85°)
OKLab	oklab(50.44% 0.0004 -0.1757)
OKLCH	oklch(50.44% 0.176 270.1)
XYZ	xyz(15.8278, 12.0284, 55.5093)
Luminance	0.1203 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4057C7 #C7B040

analogous

#409BC7 #4057C7 #6D40C7

triadic

#4057C7 #C74057 #57C740

tetradic

#4057C7 #C7409B #C7B040 #40C76D

square

#4057C7 #C7409B #C7B040 #40C76D

split-complementary

#4057C7 #C76D40 #9BC740

monochromatic

#202D6D #2E419C #4057C7 #6F81D5 #9FAAE3

Accessibility & contrast

On white

6.17

#4057C7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.41

#4057C7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4057C7

6.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4057C7	#FFFFFF	#000000	##FFFFFF
##4057C7	1.00	6.17	3.41	6.17
#FFFFFF	6.17	1.00	21.00	1.00
#000000	3.41	21.00	1.00	21.00
##FFFFFF	6.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068CB

Deuteranopia (green-blind)

#005BC5

Tritanopia (blue-blind)

#007286

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #4057c7;
/* rgb */ color: rgb(64, 87, 199);
/* oklch */ color: oklch(50.4% 0.176 270.1);

Tailwind

colors: {
  custom: {
    50: '#8586d9',
    500: '#4057c7',
    950: '#000000',
  },
}

SCSS

$custom: #4057c7;
$custom-light: #8586d9;
$custom-dark: #000000;

JSON

{
  "hex": "#4057c7",
  "rgb": {
    "r": 64,
    "g": 87,
    "b": 199
  },
  "hsl": {
    "h": 229.778,
    "s": 54.656,
    "l": 51.569
  },
  "oklch": {
    "l": 0.50443,
    "c": 0.17573,
    "h": 270.1
  },
  "luminance": 0.1203
}

Semantic roles & 50–950 ramp

primary

#4057C7

secondary

#CFC594

accent

#C54ADE

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #4057C7

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

Preview Lab → · Contrast checker → · Palette generator →