#333AB3#333AB3

#333AB3 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.7% C 0.188 H 272.8°. Best body text is #FFFFFF at 8.76:1 contrast (WCAG AA passes).

Color values

HEX	#333AB3
RGB	rgb(51, 58, 179)
HSL	hsl(237, 56%, 45%)
HSV	hsv(237, 72%, 70%)
CMYK	cmyk(71.5%, 67.6%, 0%, 29.8%)
CIE-LAB	lab(31.77, 37.85, -64.83)
CIE-LCH	lch(31.77, 75.07, 300.28°)
OKLab	oklab(42.73% 0.009 -0.1874)
OKLCH	oklch(42.73% 0.188 272.8)
XYZ	xyz(11.0122, 6.9835, 43.4067)
Luminance	0.0698 (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

#333AB3 #B3AC33

analogous

#337AB3 #333AB3 #6C33B3

triadic

#333AB3 #B3333A #3AB333

tetradic

#333AB3 #B3337A #B3AC33 #33B36C

square

#333AB3 #B3337A #B3AC33 #33B36C

split-complementary

#333AB3 #B36C33 #7AB333

monochromatic

#181B54 #252B83 #333AB3 #555BCE #8489DC

Accessibility & contrast

On white

8.76

#333AB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#333AB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333AB3

8.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333AB3	#FFFFFF	#000000	##FFFFFF
##333AB3	1.00	8.76	2.40	8.76
#FFFFFF	8.76	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B7

Deuteranopia (green-blind)

#0045B1

Tritanopia (blue-blind)

#005A71

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #333ab3;
/* rgb */ color: rgb(51, 58, 179);
/* oklch */ color: oklch(42.7% 0.188 272.8);

Tailwind

colors: {
  custom: {
    50: '#7d70cb',
    500: '#333ab3',
    950: '#000000',
  },
}

SCSS

$custom: #333ab3;
$custom-light: #7d70cb;
$custom-dark: #000000;

JSON

{
  "hex": "#333ab3",
  "rgb": {
    "r": 51,
    "g": 58,
    "b": 179
  },
  "hsl": {
    "h": 236.719,
    "s": 55.652,
    "l": 45.098
  },
  "oklch": {
    "l": 0.42733,
    "c": 0.18763,
    "h": 272.8
  },
  "luminance": 0.06985
}

Semantic roles & 50–950 ramp

primary

#333AB3

secondary

#C6C27C

accent

#D749DF

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #333AB3

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

Preview Lab → · Contrast checker → · Palette generator →