#4057CE#4057CE

#4057CE is a mid, vivid blue. Relative luminance 0.124; OKLCH L 51.0% C 0.185 H 270.2°. Best body text is #FFFFFF at 6.05:1 contrast (WCAG AA passes).

Color values

HEX	#4057CE
RGB	rgb(64, 87, 206)
HSL	hsl(230, 59%, 53%)
HSV	hsv(230, 69%, 81%)
CMYK	cmyk(68.9%, 57.8%, 0%, 19.2%)
CIE-LAB	lab(41.78, 30.75, -64.24)
CIE-LCH	lch(41.78, 71.22, 295.58°)
OKLab	oklab(51% 0.0006 -0.1851)
OKLCH	oklch(51% 0.185 270.2)
XYZ	xyz(16.6593, 12.3610, 59.8885)
Luminance	0.1236 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4057CE #CEB740

analogous

#409ECE #4057CE #7040CE

triadic

#4057CE #CE4057 #57CE40

tetradic

#4057CE #CE409E #CEB740 #40CE70

square

#4057CE #CE409E #CEB740 #40CE70

split-complementary

#4057CE #CE7040 #9ECE40

monochromatic

#1E2C75 #2B3FA6 #4057CE #7182DA #A1ADE7

Accessibility & contrast

On white

6.05

#4057CE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#4057CE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4057CE

6.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4057CE	#FFFFFF	#000000	##FFFFFF
##4057CE	1.00	6.05	3.47	6.05
#FFFFFF	6.05	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069D2

Deuteranopia (green-blind)

#005CCC

Tritanopia (blue-blind)

#00748A

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #4057ce;
/* rgb */ color: rgb(64, 87, 206);
/* oklch */ color: oklch(51.0% 0.185 270.2);

Tailwind

colors: {
  custom: {
    50: '#8686de',
    500: '#4057ce',
    950: '#000000',
  },
}

SCSS

$custom: #4057ce;
$custom-light: #8686de;
$custom-dark: #000000;

JSON

{
  "hex": "#4057ce",
  "rgb": {
    "r": 64,
    "g": 87,
    "b": 206
  },
  "hsl": {
    "h": 230.282,
    "s": 59.167,
    "l": 52.941
  },
  "oklch": {
    "l": 0.50998,
    "c": 0.18512,
    "h": 270.2
  },
  "luminance": 0.12363
}

Semantic roles & 50–950 ramp

primary

#4057CE

secondary

#D4CA96

accent

#C945E2

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0D0B15

muted

#7D7C83

Preview Lab

Preview with #4057CE

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

Preview Lab → · Contrast checker → · Palette generator →