#4D71BB#4D71BB

#4D71BB is a mid, vivid blue. Relative luminance 0.170; OKLCH L 55.7% C 0.123 H 263.4°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#4D71BB
RGB	rgb(77, 113, 187)
HSL	hsl(220, 45%, 52%)
HSV	hsv(220, 59%, 73%)
CMYK	cmyk(58.8%, 39.6%, 0%, 26.7%)
CIE-LAB	lab(48.23, 9.93, -42.88)
CIE-LCH	lch(48.23, 44.01, 283.04°)
OKLab	oklab(55.69% -0.0142 -0.1217)
OKLCH	oklch(55.69% 0.123 263.4)
XYZ	xyz(17.9323, 16.9744, 49.3355)
Luminance	0.1698 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4D71BB #BB974D

analogous

#4DA8BB #4D71BB #604DBB

triadic

#4D71BB #BB4D71 #71BB4D

tetradic

#4D71BB #BB4DA8 #BB974D #4DBB60

square

#4D71BB #BB4DA8 #BB974D #4DBB60

split-complementary

#4D71BB #BB604D #A8BB4D

monochromatic

#273C66 #385693 #4D71BB #7994CC #A6B8DD

Accessibility & contrast

On white

4.78

#4D71BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.40

#4D71BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4D71BB

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4D71BB	#FFFFFF	#000000	##FFFFFF
##4D71BB	1.00	4.78	4.40	4.78
#FFFFFF	4.78	1.00	21.00	1.00
#000000	4.40	21.00	1.00	21.00
##FFFFFF	4.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5178BE

Deuteranopia (green-blind)

#436EB9

Tritanopia (blue-blind)

#00818D

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #4d71bb;
/* rgb */ color: rgb(77, 113, 187);
/* oklch */ color: oklch(55.7% 0.123 263.4);

Tailwind

colors: {
  custom: {
    50: '#8899d0',
    500: '#4d71bb',
    950: '#000000',
  },
}

SCSS

$custom: #4d71bb;
$custom-light: #8899d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4d71bb",
  "rgb": {
    "r": 77,
    "g": 113,
    "b": 187
  },
  "hsl": {
    "h": 220.364,
    "s": 44.715,
    "l": 51.765
  },
  "oklch": {
    "l": 0.55692,
    "c": 0.12255,
    "h": 263.4
  },
  "luminance": 0.16976
}

Semantic roles & 50–950 ramp

primary

#4D71BB

secondary

#CABA9A

accent

#AA53D4

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0D14

muted

#7D7E82

Preview Lab

Preview with #4D71BB

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

Preview Lab → · Contrast checker → · Palette generator →