#333BB0#333BB0

#333BB0 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.6% C 0.183 H 272.7°. Best body text is #FFFFFF at 8.77:1 contrast (WCAG AA passes).

Color values

HEX	#333BB0
RGB	rgb(51, 59, 176)
HSL	hsl(236, 55%, 45%)
HSV	hsv(236, 71%, 69%)
CMYK	cmyk(71%, 66.5%, 0%, 31%)
CIE-LAB	lab(31.73, 36.18, -63.12)
CIE-LCH	lch(31.73, 72.75, 299.82°)
OKLab	oklab(42.62% 0.0086 -0.1824)
OKLCH	oklch(42.62% 0.183 272.7)
XYZ	xyz(10.7630, 6.9653, 41.8431)
Luminance	0.0697 (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

#333BB0 #B0A833

analogous

#337AB0 #333BB0 #6A33B0

triadic

#333BB0 #B0333B #3BB033

tetradic

#333BB0 #B0337A #B0A833 #33B06A

square

#333BB0 #B0337A #B0A833 #33B06A

split-complementary

#333BB0 #B06A33 #7AB033

monochromatic

#181B51 #252B81 #333BB0 #535BCD #8288DB

Accessibility & contrast

On white

8.77

#333BB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#333BB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333BB0

8.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333BB0	#FFFFFF	#000000	##FFFFFF
##333BB0	1.00	8.77	2.39	8.77
#FFFFFF	8.77	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B4

Deuteranopia (green-blind)

#0045AE

Tritanopia (blue-blind)

#005A70

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #333bb0;
/* rgb */ color: rgb(51, 59, 176);
/* oklch */ color: oklch(42.6% 0.183 272.7);

Tailwind

colors: {
  custom: {
    50: '#7c71c9',
    500: '#333bb0',
    950: '#000000',
  },
}

SCSS

$custom: #333bb0;
$custom-light: #7c71c9;
$custom-dark: #000000;

JSON

{
  "hex": "#333bb0",
  "rgb": {
    "r": 51,
    "g": 59,
    "b": 176
  },
  "hsl": {
    "h": 236.16,
    "s": 55.066,
    "l": 44.51
  },
  "oklch": {
    "l": 0.42619,
    "c": 0.18258,
    "h": 272.7
  },
  "luminance": 0.06966
}

Semantic roles & 50–950 ramp

primary

#333BB0

secondary

#C4C07B

accent

#D549DE

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #333BB0

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

Preview Lab → · Contrast checker → · Palette generator →