#4F71CB#4F71CB

#4F71CB is a mid, vivid blue. Relative luminance 0.178; OKLCH L 56.8% C 0.144 H 266.3°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#4F71CB
RGB	rgb(79, 113, 203)
HSL	hsl(224, 54%, 55%)
HSV	hsv(224, 61%, 80%)
CMYK	cmyk(61.1%, 44.3%, 0%, 20.4%)
CIE-LAB	lab(49.23, 15.76, -50.47)
CIE-LCH	lch(49.23, 52.87, 287.34°)
OKLab	oklab(56.78% -0.0092 -0.1439)
OKLCH	oklch(56.78% 0.144 266.3)
XYZ	xyz(19.9054, 17.7826, 58.8717)
Luminance	0.1778 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F71CB #CBA94F

analogous

#4FAFCB #4F71CB #6B4FCB

triadic

#4F71CB #CB4F71 #71CB4F

tetradic

#4F71CB #CB4FAF #CBA94F #4FCB6B

square

#4F71CB #CB4FAF #CBA94F #4FCB6B

split-complementary

#4F71CB #CB6B4F #AFCB4F

monochromatic

#243C7B #3253AA #4F71CB #7E97D9 #ADBDE7

Accessibility & contrast

On white

4.61

#4F71CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#4F71CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #4F71CB

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F71CB	#FFFFFF	#000000	##FFFFFF
##4F71CB	1.00	4.61	4.56	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#477BCE

Deuteranopia (green-blind)

#3470C9

Tritanopia (blue-blind)

#008594

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #4f71cb;
/* rgb */ color: rgb(79, 113, 203);
/* oklch */ color: oklch(56.8% 0.144 266.3);

Tailwind

colors: {
  custom: {
    50: '#8b99db',
    500: '#4f71cb',
    950: '#000000',
  },
}

SCSS

$custom: #4f71cb;
$custom-light: #8b99db;
$custom-dark: #000000;

JSON

{
  "hex": "#4f71cb",
  "rgb": {
    "r": 79,
    "g": 113,
    "b": 203
  },
  "hsl": {
    "h": 223.548,
    "s": 54.386,
    "l": 55.294
  },
  "oklch": {
    "l": 0.56784,
    "c": 0.14425,
    "h": 266.3
  },
  "luminance": 0.17784
}

Semantic roles & 50–950 ramp

primary

#4F71CB

secondary

#D5C7A1

accent

#B54ADE

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0D15

muted

#7E7E83

Preview Lab

Preview with #4F71CB

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

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