#4247A5#4247A5

#4247A5 is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.8% C 0.149 H 276.3°. Best body text is #FFFFFF at 7.85:1 contrast (WCAG AA passes).

Color values

HEX	#4247A5
RGB	rgb(66, 71, 165)
HSL	hsl(237, 43%, 45%)
HSV	hsv(237, 60%, 65%)
CMYK	cmyk(60%, 57%, 0%, 35.3%)
CIE-LAB	lab(34.76, 26.97, -51.55)
CIE-LCH	lch(34.76, 58.18, 297.62°)
OKLab	oklab(44.83% 0.0163 -0.1479)
OKLCH	oklch(44.83% 0.149 276.3)
XYZ	xyz(11.2893, 8.3805, 36.6127)
Luminance	0.0838 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4247A5 #A5A042

analogous

#4278A5 #4247A5 #6F42A5

triadic

#4247A5 #A54247 #47A542

tetradic

#4247A5 #A54278 #A5A042 #42A56F

square

#4247A5 #A54278 #A5A042 #42A56F

split-complementary

#4247A5 #A56F42 #78A542

monochromatic

#1F214E #313479 #4247A5 #6368C1 #8F93D2

Accessibility & contrast

On white

7.85

#4247A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#4247A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4247A5

7.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4247A5	#FFFFFF	#000000	##FFFFFF
##4247A5	1.00	7.85	2.68	7.85
#FFFFFF	7.85	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056A8

Deuteranopia (green-blind)

#004EA3

Tritanopia (blue-blind)

#005D6F

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #4247a5;
/* rgb */ color: rgb(66, 71, 165);
/* oklch */ color: oklch(44.8% 0.149 276.3);

Tailwind

colors: {
  custom: {
    50: '#807ac0',
    500: '#4247a5',
    950: '#000000',
  },
}

SCSS

$custom: #4247a5;
$custom-light: #807ac0;
$custom-dark: #000000;

JSON

{
  "hex": "#4247a5",
  "rgb": {
    "r": 66,
    "g": 71,
    "b": 165
  },
  "hsl": {
    "h": 236.97,
    "s": 42.857,
    "l": 45.294
  },
  "oklch": {
    "l": 0.44832,
    "c": 0.14884,
    "h": 276.3
  },
  "luminance": 0.08381
}

Semantic roles & 50–950 ramp

primary

#4247A5

secondary

#BDBB85

accent

#CC55D3

background

#F8F7FB

surface

#EFEDF7

border

#CAC8D0

text

#0B0912

muted

#7C7B81

Preview Lab

Preview with #4247A5

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

Preview Lab → · Contrast checker → · Palette generator →