#333DB3#333DB3

#333DB3 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.2% C 0.184 H 272.2°. Best body text is #FFFFFF at 8.54:1 contrast (WCAG AA passes).

Color values

HEX	#333DB3
RGB	rgb(51, 61, 179)
HSL	hsl(235, 56%, 45%)
HSV	hsv(235, 72%, 70%)
CMYK	cmyk(71.5%, 65.9%, 0%, 29.8%)
CIE-LAB	lab(32.47, 35.98, -63.69)
CIE-LCH	lch(32.47, 73.15, 299.46°)
OKLab	oklab(43.24% 0.0071 -0.184)
OKLCH	oklch(43.24% 0.184 272.2)
XYZ	xyz(11.1679, 7.2949, 43.4586)
Luminance	0.0730 (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

#333DB3 #B3A933

analogous

#337DB3 #333DB3 #6933B3

triadic

#333DB3 #B3333D #3DB333

tetradic

#333DB3 #B3337D #B3A933 #33B369

square

#333DB3 #B3337D #B3A933 #33B369

split-complementary

#333DB3 #B36933 #7DB333

monochromatic

#181D54 #252D83 #333DB3 #555ECE #848BDC

Accessibility & contrast

On white

8.54

#333DB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#333DB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333DB3

8.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333DB3	#FFFFFF	#000000	##FFFFFF
##333DB3	1.00	8.54	2.46	8.54
#FFFFFF	8.54	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B7

Deuteranopia (green-blind)

#0046B1

Tritanopia (blue-blind)

#005C72

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #333db3;
/* rgb */ color: rgb(51, 61, 179);
/* oklch */ color: oklch(43.2% 0.184 272.2);

Tailwind

colors: {
  custom: {
    50: '#7d73cb',
    500: '#333db3',
    950: '#000000',
  },
}

SCSS

$custom: #333db3;
$custom-light: #7d73cb;
$custom-dark: #000000;

JSON

{
  "hex": "#333db3",
  "rgb": {
    "r": 51,
    "g": 61,
    "b": 179
  },
  "hsl": {
    "h": 235.313,
    "s": 55.652,
    "l": 45.098
  },
  "oklch": {
    "l": 0.43242,
    "c": 0.18417,
    "h": 272.2
  },
  "luminance": 0.07296
}

Semantic roles & 50–950 ramp

primary

#333DB3

secondary

#C6C07C

accent

#D349DF

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #333DB3

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

Preview Lab → · Contrast checker → · Palette generator →