#333DB8#333DB8

#333DB8 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.7% C 0.191 H 272.0°. Best body text is #FFFFFF at 8.40:1 contrast (WCAG AA passes).

Color values

HEX	#333DB8
RGB	rgb(51, 61, 184)
HSL	hsl(235, 57%, 46%)
HSV	hsv(235, 72%, 72%)
CMYK	cmyk(72.3%, 66.8%, 0%, 27.8%)
CIE-LAB	lab(32.92, 37.74, -65.91)
CIE-LCH	lch(32.92, 75.95, 299.79°)
OKLab	oklab(43.71% 0.0066 -0.1905)
OKLCH	oklch(43.71% 0.191 272)
XYZ	xyz(11.6828, 7.5008, 46.1702)
Luminance	0.0750 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#333DB8 #B8AE33

analogous

#337FB8 #333DB8 #6B33B8

triadic

#333DB8 #B8333D #3DB833

tetradic

#333DB8 #B8337F #B8AE33 #33B86B

square

#333DB8 #B8337F #B8AE33 #33B86B

split-complementary

#333DB8 #B86B33 #7FB833

monochromatic

#181D58 #262D88 #333DB8 #5861D1 #888EDE

Accessibility & contrast

On white

8.40

#333DB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#333DB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333DB8

8.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333DB8	#FFFFFF	#000000	##FFFFFF
##333DB8	1.00	8.40	2.50	8.40
#FFFFFF	8.40	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BC

Deuteranopia (green-blind)

#0047B6

Tritanopia (blue-blind)

#005E75

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #333db8;
/* rgb */ color: rgb(51, 61, 184);
/* oklch */ color: oklch(43.7% 0.191 272.0);

Tailwind

colors: {
  custom: {
    50: '#7e73ce',
    500: '#333db8',
    950: '#000000',
  },
}

SCSS

$custom: #333db8;
$custom-light: #7e73ce;
$custom-dark: #000000;

JSON

{
  "hex": "#333db8",
  "rgb": {
    "r": 51,
    "g": 61,
    "b": 184
  },
  "hsl": {
    "h": 235.489,
    "s": 56.596,
    "l": 46.078
  },
  "oklch": {
    "l": 0.4371,
    "c": 0.19065,
    "h": 272
  },
  "luminance": 0.07502
}

Semantic roles & 50–950 ramp

primary

#333DB8

secondary

#C8C27F

accent

#D448E0

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #333DB8

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

Preview Lab → · Contrast checker → · Palette generator →