#4739B1#4739B1

#4739B1 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.8% C 0.182 H 281.1°. Best body text is #FFFFFF at 8.44:1 contrast (WCAG AA passes).

Color values

HEX	#4739B1
RGB	rgb(71, 57, 177)
HSL	hsl(247, 51%, 46%)
HSV	hsv(247, 68%, 69%)
CMYK	cmyk(59.9%, 67.8%, 0%, 30.6%)
CIE-LAB	lab(32.79, 40.51, -61.92)
CIE-LCH	lch(32.79, 74.00, 303.19°)
OKLab	oklab(43.78% 0.035 -0.1783)
OKLCH	oklch(43.78% 0.182 281.1)
XYZ	xyz(11.9950, 7.4393, 42.3903)
Luminance	0.0744 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.60

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4739B1 #A3B139

analogous

#3967B1 #4739B1 #8339B1

triadic

#4739B1 #B14739 #39B147

tetradic

#4739B1 #B13967 #A3B139 #39B183

square

#4739B1 #B13967 #A3B139 #39B183

split-complementary

#4739B1 #B18339 #67B139

monochromatic

#221B54 #342A83 #4739B1 #695DCB #948BDA

Accessibility & contrast

On white

8.44

#4739B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#4739B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4739B1

8.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4739B1	#FFFFFF	#000000	##FFFFFF
##4739B1	1.00	8.44	2.49	8.44
#FFFFFF	8.44	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B5

Deuteranopia (green-blind)

#0049AF

Tritanopia (blue-blind)

#005870

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #4739b1;
/* rgb */ color: rgb(71, 57, 177);
/* oklch */ color: oklch(43.8% 0.182 281.1);

Tailwind

colors: {
  custom: {
    50: '#8671c9',
    500: '#4739b1',
    950: '#000000',
  },
}

SCSS

$custom: #4739b1;
$custom-light: #8671c9;
$custom-dark: #000000;

JSON

{
  "hex": "#4739b1",
  "rgb": {
    "r": 71,
    "g": 57,
    "b": 177
  },
  "hsl": {
    "h": 247,
    "s": 51.282,
    "l": 45.882
  },
  "oklch": {
    "l": 0.43781,
    "c": 0.18172,
    "h": 281.1
  },
  "luminance": 0.0744
}

Semantic roles & 50–950 ramp

primary

#4739B1

secondary

#BCC482

accent

#DB4DCA

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #4739B1

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

Preview Lab → · Contrast checker → · Palette generator →