#4D57CB#4D57CB

#4D57CB is a mid, vivid blue. Relative luminance 0.127; OKLCH L 51.5% C 0.178 H 274.6°. Best body text is #FFFFFF at 5.93:1 contrast (WCAG AA passes).

Color values

HEX	#4D57CB
RGB	rgb(77, 87, 203)
HSL	hsl(235, 55%, 55%)
HSV	hsv(235, 62%, 80%)
CMYK	cmyk(62.1%, 57.1%, 0%, 20.4%)
CIE-LAB	lab(42.31, 31.70, -61.61)
CIE-LCH	lch(42.31, 69.29, 297.23°)
OKLab	oklab(51.52% 0.0142 -0.1771)
OKLCH	oklch(51.52% 0.178 274.6)
XYZ	xyz(17.2447, 12.7046, 58.0318)
Luminance	0.1271 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4D57CB #CBC14D

analogous

#4D96CB #4D57CB #824DCB

triadic

#4D57CB #CB4D57 #57CB4D

tetradic

#4D57CB #CB4D96 #CBC14D #4DCB82

square

#4D57CB #CB4D96 #CBC14D #4DCB82

split-complementary

#4D57CB #CB824D #96CB4D

monochromatic

#242A7A #313BA9 #4D57CB #7C84D9 #ACB0E7

Accessibility & contrast

On white

5.93

#4D57CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#4D57CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4D57CB

5.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4D57CB	#FFFFFF	#000000	##FFFFFF
##4D57CB	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)

#0069CF

Deuteranopia (green-blind)

#005FC9

Tritanopia (blue-blind)

#007388

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #4d57cb;
/* rgb */ color: rgb(77, 87, 203);
/* oklch */ color: oklch(51.5% 0.178 274.6);

Tailwind

colors: {
  custom: {
    50: '#8b86dc',
    500: '#4d57cb',
    950: '#000000',
  },
}

SCSS

$custom: #4d57cb;
$custom-light: #8b86dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4d57cb",
  "rgb": {
    "r": 77,
    "g": 87,
    "b": 203
  },
  "hsl": {
    "h": 235.238,
    "s": 54.783,
    "l": 54.902
  },
  "oklch": {
    "l": 0.51524,
    "c": 0.17766,
    "h": 274.6
  },
  "luminance": 0.12706
}

Semantic roles & 50–950 ramp

primary

#4D57CB

secondary

#D4D09F

accent

#D24ADE

background

#F9F8FD

surface

#F1EFFB

border

#CBCAD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #4D57CB

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

Preview Lab → · Contrast checker → · Palette generator →