#333FAF#333FAF

#333FAF is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.2% C 0.177 H 271.9°. Best body text is #FFFFFF at 8.50:1 contrast (WCAG AA passes).

Color values

HEX	#333FAF
RGB	rgb(51, 63, 175)
HSL	hsl(234, 55%, 44%)
HSV	hsv(234, 71%, 69%)
CMYK	cmyk(70.9%, 64%, 0%, 31.4%)
CIE-LAB	lab(32.60, 33.29, -61.10)
CIE-LCH	lch(32.60, 69.58, 298.58°)
OKLab	oklab(43.23% 0.0059 -0.1764)
OKLCH	oklch(43.23% 0.177 271.9)
XYZ	xyz(10.8780, 7.3529, 41.3951)
Luminance	0.0735 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.81

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#333FAF #AFA333

analogous

#337DAF #333FAF #6533AF

triadic

#333FAF #AF333F #3FAF33

tetradic

#333FAF #AF337D #AFA333 #33AF65

square

#333FAF #AF337D #AFA333 #33AF65

split-complementary

#333FAF #AF6533 #7DAF33

monochromatic

#171D50 #252E80 #333FAF #525ECD #828ADB

Accessibility & contrast

On white

8.50

#333FAF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#333FAF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333FAF

8.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333FAF	#FFFFFF	#000000	##FFFFFF
##333FAF	1.00	8.50	2.47	8.50
#FFFFFF	8.50	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B3

Deuteranopia (green-blind)

#0047AD

Tritanopia (blue-blind)

#005C71

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #333faf;
/* rgb */ color: rgb(51, 63, 175);
/* oklch */ color: oklch(43.2% 0.177 271.9);

Tailwind

colors: {
  custom: {
    50: '#7c74c8',
    500: '#333faf',
    950: '#000000',
  },
}

SCSS

$custom: #333faf;
$custom-light: #7c74c8;
$custom-dark: #000000;

JSON

{
  "hex": "#333faf",
  "rgb": {
    "r": 51,
    "g": 63,
    "b": 175
  },
  "hsl": {
    "h": 234.194,
    "s": 54.867,
    "l": 44.314
  },
  "oklch": {
    "l": 0.43228,
    "c": 0.17654,
    "h": 271.9
  },
  "luminance": 0.07354
}

Semantic roles & 50–950 ramp

primary

#333FAF

secondary

#C4BD7A

accent

#D04ADE

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #333FAF

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

Preview Lab → · Contrast checker → · Palette generator →