#333CB3#333CB3

#333CB3 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.1% C 0.185 H 272.4°. Best body text is #FFFFFF at 8.61:1 contrast (WCAG AA passes).

Color values

HEX	#333CB3
RGB	rgb(51, 60, 179)
HSL	hsl(236, 56%, 45%)
HSV	hsv(236, 72%, 70%)
CMYK	cmyk(71.5%, 66.5%, 0%, 29.8%)
CIE-LAB	lab(32.23, 36.60, -64.07)
CIE-LCH	lch(32.23, 73.79, 299.74°)
OKLab	oklab(43.07% 0.0077 -0.1852)
OKLCH	oklch(43.07% 0.185 272.4)
XYZ	xyz(11.1150, 7.1891, 43.4409)
Luminance	0.0719 (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

#333CB3 #B3AA33

analogous

#337CB3 #333CB3 #6A33B3

triadic

#333CB3 #B3333C #3CB333

tetradic

#333CB3 #B3337C #B3AA33 #33B36A

square

#333CB3 #B3337C #B3AA33 #33B36A

split-complementary

#333CB3 #B36A33 #7CB333

monochromatic

#181C54 #252C83 #333CB3 #555DCE #848BDC

Accessibility & contrast

On white

8.61

#333CB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#333CB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333CB3

8.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333CB3	#FFFFFF	#000000	##FFFFFF
##333CB3	1.00	8.61	2.44	8.61
#FFFFFF	8.61	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.61	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: #333cb3;
/* rgb */ color: rgb(51, 60, 179);
/* oklch */ color: oklch(43.1% 0.185 272.4);

Tailwind

colors: {
  custom: {
    50: '#7d72cb',
    500: '#333cb3',
    950: '#000000',
  },
}

SCSS

$custom: #333cb3;
$custom-light: #7d72cb;
$custom-dark: #000000;

JSON

{
  "hex": "#333cb3",
  "rgb": {
    "r": 51,
    "g": 60,
    "b": 179
  },
  "hsl": {
    "h": 235.781,
    "s": 55.652,
    "l": 45.098
  },
  "oklch": {
    "l": 0.43071,
    "c": 0.18533,
    "h": 272.4
  },
  "luminance": 0.0719
}

Semantic roles & 50–950 ramp

primary

#333CB3

secondary

#C6C07C

accent

#D449DF

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #333CB3

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

Preview Lab → · Contrast checker → · Palette generator →