#333AA8#333AA8

#333AA8 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.7% C 0.173 H 273.3°. Best body text is #FFFFFF at 9.09:1 contrast (WCAG AA passes).

Color values

HEX	#333AA8
RGB	rgb(51, 58, 168)
HSL	hsl(236, 53%, 43%)
HSV	hsv(236, 70%, 66%)
CMYK	cmyk(69.6%, 65.5%, 0%, 34.1%)
CIE-LAB	lab(30.77, 33.99, -59.89)
CIE-LCH	lch(30.77, 68.86, 299.57°)
OKLab	oklab(41.7% 0.01 -0.1729)
OKLCH	oklch(41.7% 0.173 273.3)
XYZ	xyz(9.9438, 6.5561, 37.7796)
Luminance	0.0656 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.24

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#333AA8 #A8A133

analogous

#3375A8 #333AA8 #6633A8

triadic

#333AA8 #A8333A #3AA833

tetradic

#333AA8 #A83375 #A8A133 #33A866

square

#333AA8 #A83375 #A8A133 #33A866

split-complementary

#333AA8 #A86633 #75A833

monochromatic

#161A4A #252A79 #333AA8 #4F56C9 #7E83D8

Accessibility & contrast

On white

9.09

#333AA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#333AA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333AA8

9.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333AA8	#FFFFFF	#000000	##FFFFFF
##333AA8	1.00	9.09	2.31	9.09
#FFFFFF	9.09	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAB

Deuteranopia (green-blind)

#0043A6

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #333aa8;
/* rgb */ color: rgb(51, 58, 168);
/* oklch */ color: oklch(41.7% 0.173 273.3);

Tailwind

colors: {
  custom: {
    50: '#7b70c3',
    500: '#333aa8',
    950: '#000000',
  },
}

SCSS

$custom: #333aa8;
$custom-light: #7b70c3;
$custom-dark: #000000;

JSON

{
  "hex": "#333aa8",
  "rgb": {
    "r": 51,
    "g": 58,
    "b": 168
  },
  "hsl": {
    "h": 236.41,
    "s": 53.425,
    "l": 42.941
  },
  "oklch": {
    "l": 0.41704,
    "c": 0.17323,
    "h": 273.3
  },
  "luminance": 0.06557
}

Semantic roles & 50–950 ramp

primary

#333AA8

secondary

#C1BC76

accent

#D44BDD

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #333AA8

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

Preview Lab → · Contrast checker → · Palette generator →