#4B71CB#4B71CB

#4B71CB is a mid, vivid blue. Relative luminance 0.176; OKLCH L 56.6% C 0.146 H 264.9°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#4B71CB
RGB	rgb(75, 113, 203)
HSL	hsl(222, 55%, 55%)
HSV	hsv(222, 63%, 80%)
CMYK	cmyk(63.1%, 44.3%, 0%, 20.4%)
CIE-LAB	lab(49.03, 15.02, -50.80)
CIE-LCH	lch(49.03, 52.98, 286.47°)
OKLab	oklab(56.57% -0.0129 -0.145)
OKLCH	oklch(56.57% 0.146 264.9)
XYZ	xyz(19.5825, 17.6161, 58.8566)
Luminance	0.1762 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B71CB #CBA54B

analogous

#4BB1CB #4B71CB #654BCB

triadic

#4B71CB #CB4B71 #71CB4B

tetradic

#4B71CB #CB4BB1 #CBA54B #4BCB65

square

#4B71CB #CB4BB1 #CBA54B #4BCB65

split-complementary

#4B71CB #CB654B #B1CB4B

monochromatic

#233C79 #3154A8 #4B71CB #7A96D9 #AABCE6

Accessibility & contrast

On white

4.64

#4B71CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#4B71CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #4B71CB

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B71CB	#FFFFFF	#000000	##FFFFFF
##4B71CB	1.00	4.64	4.52	4.64
#FFFFFF	4.64	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#477BCE

Deuteranopia (green-blind)

#326FC9

Tritanopia (blue-blind)

#008594

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #4b71cb;
/* rgb */ color: rgb(75, 113, 203);
/* oklch */ color: oklch(56.6% 0.146 264.9);

Tailwind

colors: {
  custom: {
    50: '#8999db',
    500: '#4b71cb',
    950: '#000000',
  },
}

SCSS

$custom: #4b71cb;
$custom-light: #8999db;
$custom-dark: #000000;

JSON

{
  "hex": "#4b71cb",
  "rgb": {
    "r": 75,
    "g": 113,
    "b": 203
  },
  "hsl": {
    "h": 222.188,
    "s": 55.172,
    "l": 54.51
  },
  "oklch": {
    "l": 0.56573,
    "c": 0.1456,
    "h": 264.9
  },
  "luminance": 0.17618
}

Semantic roles & 50–950 ramp

primary

#4B71CB

secondary

#D4C49E

accent

#B249DF

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0D0D15

muted

#7D7E83

Preview Lab

Preview with #4B71CB

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

Preview Lab → · Contrast checker → · Palette generator →