#4740BB#4740BB

#4740BB is a mid, vivid blue. Relative luminance 0.086; OKLCH L 45.8% C 0.186 H 278.6°. Best body text is #FFFFFF at 7.72:1 contrast (WCAG AA passes).

Color values

HEX	#4740BB
RGB	rgb(71, 64, 187)
HSL	hsl(243, 49%, 49%)
HSV	hsv(243, 66%, 73%)
CMYK	cmyk(62%, 65.8%, 0%, 26.7%)
CIE-LAB	lab(35.19, 39.58, -63.91)
CIE-LCH	lch(35.19, 75.18, 301.77°)
OKLab	oklab(45.78% 0.0279 -0.1841)
OKLCH	oklch(45.78% 0.186 278.6)
XYZ	xyz(13.3987, 8.5932, 47.9567)
Luminance	0.0859 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 1.49

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4740BB #B4BB40

analogous

#4077BB #4740BB #8540BB

triadic

#4740BB #BB4740 #40BB47

tetradic

#4740BB #BB4077 #B4BB40 #40BB85

square

#4740BB #BB4077 #B4BB40 #40BB85

split-complementary

#4740BB #BB8540 #77BB40

monochromatic

#242160 #36308D #4740BB #716CCD #9D99DC

Accessibility & contrast

On white

7.72

#4740BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#4740BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4740BB

7.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4740BB	#FFFFFF	#000000	##FFFFFF
##4740BB	1.00	7.72	2.72	7.72
#FFFFFF	7.72	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058BF

Deuteranopia (green-blind)

#004EB9

Tritanopia (blue-blind)

#006078

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #4740bb;
/* rgb */ color: rgb(71, 64, 187);
/* oklch */ color: oklch(45.8% 0.186 278.6);

Tailwind

colors: {
  custom: {
    50: '#8776d0',
    500: '#4740bb',
    950: '#000000',
  },
}

SCSS

$custom: #4740bb;
$custom-light: #8776d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4740bb",
  "rgb": {
    "r": 71,
    "g": 64,
    "b": 187
  },
  "hsl": {
    "h": 243.415,
    "s": 49.004,
    "l": 49.216
  },
  "oklch": {
    "l": 0.45784,
    "c": 0.18625,
    "h": 278.6
  },
  "luminance": 0.08594
}

Semantic roles & 50–950 ramp

primary

#4740BB

secondary

#C5C88F

accent

#D94FD1

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #4740BB

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

Preview Lab → · Contrast checker → · Palette generator →