#4057CD#4057CD

#4057CD is a mid, vivid blue. Relative luminance 0.123; OKLCH L 50.9% C 0.184 H 270.2°. Best body text is #FFFFFF at 6.06:1 contrast (WCAG AA passes).

Color values

HEX	#4057CD
RGB	rgb(64, 87, 205)
HSL	hsl(230, 59%, 53%)
HSV	hsv(230, 69%, 80%)
CMYK	cmyk(68.8%, 57.6%, 0%, 19.6%)
CIE-LAB	lab(41.71, 30.39, -63.79)
CIE-LCH	lch(41.71, 70.66, 295.48°)
OKLab	oklab(50.92% 0.0006 -0.1838)
OKLCH	oklch(50.92% 0.184 270.2)
XYZ	xyz(16.5382, 12.3125, 59.2508)
Luminance	0.1231 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4057CD #CDB640

analogous

#409DCD #4057CD #7040CD

triadic

#4057CD #CD4057 #57CD40

tetradic

#4057CD #CD409D #CDB640 #40CD70

square

#4057CD #CD409D #CDB640 #40CD70

split-complementary

#4057CD #CD7040 #9DCD40

monochromatic

#1E2C74 #2B3FA5 #4057CD #7182DA #A1ACE6

Accessibility & contrast

On white

6.06

#4057CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.46

#4057CD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4057CD

6.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4057CD	#FFFFFF	#000000	##FFFFFF
##4057CD	1.00	6.06	3.46	6.06
#FFFFFF	6.06	1.00	21.00	1.00
#000000	3.46	21.00	1.00	21.00
##FFFFFF	6.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069D1

Deuteranopia (green-blind)

#005CCB

Tritanopia (blue-blind)

#007489

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #4057cd;
/* rgb */ color: rgb(64, 87, 205);
/* oklch */ color: oklch(50.9% 0.184 270.2);

Tailwind

colors: {
  custom: {
    50: '#8686dd',
    500: '#4057cd',
    950: '#000000',
  },
}

SCSS

$custom: #4057cd;
$custom-light: #8686dd;
$custom-dark: #000000;

JSON

{
  "hex": "#4057cd",
  "rgb": {
    "r": 64,
    "g": 87,
    "b": 205
  },
  "hsl": {
    "h": 230.213,
    "s": 58.506,
    "l": 52.745
  },
  "oklch": {
    "l": 0.50918,
    "c": 0.18379,
    "h": 270.2
  },
  "luminance": 0.12314
}

Semantic roles & 50–950 ramp

primary

#4057CD

secondary

#D3C996

accent

#C846E2

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #4057CD

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

Preview Lab → · Contrast checker → · Palette generator →