#333F8B#333F8B

#333F8B is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.2% C 0.126 H 272.7°. Best body text is #FFFFFF at 9.44:1 contrast (WCAG AA passes).

Color values

HEX	#333F8B
RGB	rgb(51, 63, 139)
HSL	hsl(232, 46%, 37%)
HSV	hsv(232, 63%, 55%)
CMYK	cmyk(63.3%, 54.7%, 0%, 45.5%)
CIE-LAB	lab(29.72, 20.23, -43.95)
CIE-LCH	lch(29.72, 48.39, 294.71°)
OKLab	oklab(40.19% 0.0059 -0.1261)
OKLCH	oklch(40.19% 0.126 272.7)
XYZ	xyz(7.8014, 6.1223, 25.1917)
Luminance	0.0612 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#333F8B #8B7F33

analogous

#336B8B #333F8B #53338B

triadic

#333F8B #8B333F #3F8B33

tetradic

#333F8B #8B336B #8B7F33 #338B53

square

#333F8B #8B336B #8B7F33 #338B53

split-complementary

#333F8B #8B5333 #6B8B33

monochromatic

#121631 #232B5E #333F8B #4353B8 #6E7BCA

Accessibility & contrast

On white

9.44

#333F8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#333F8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333F8B

9.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333F8B	#FFFFFF	#000000	##FFFFFF
##333F8B	1.00	9.44	2.22	9.44
#FFFFFF	9.44	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E4A8E

Deuteranopia (green-blind)

#004289

Tritanopia (blue-blind)

#00515E

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #333f8b;
/* rgb */ color: rgb(51, 63, 139);
/* oklch */ color: oklch(40.2% 0.126 272.7);

Tailwind

colors: {
  custom: {
    50: '#7473ad',
    500: '#333f8b',
    950: '#000000',
  },
}

SCSS

$custom: #333f8b;
$custom-light: #7473ad;
$custom-dark: #000000;

JSON

{
  "hex": "#333f8b",
  "rgb": {
    "r": 51,
    "g": 63,
    "b": 139
  },
  "hsl": {
    "h": 231.818,
    "s": 46.316,
    "l": 37.255
  },
  "oklch": {
    "l": 0.40189,
    "c": 0.12621,
    "h": 272.7
  },
  "luminance": 0.06123
}

Semantic roles & 50–950 ramp

primary

#333F8B

secondary

#B2A868

accent

#C452D6

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#090810

muted

#7B7B7F

Preview Lab

Preview with #333F8B

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

Preview Lab → · Contrast checker → · Palette generator →