#333B8D#333B8D

#333B8D is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.5% C 0.135 H 274.3°. Best body text is #FFFFFF at 9.76:1 contrast (WCAG AA passes).

Color values

HEX	#333B8D
RGB	rgb(51, 59, 141)
HSL	hsl(235, 47%, 38%)
HSV	hsv(235, 64%, 55%)
CMYK	cmyk(63.8%, 58.2%, 0%, 44.7%)
CIE-LAB	lab(28.78, 23.65, -46.70)
CIE-LCH	lch(28.78, 52.35, 296.85°)
OKLab	oklab(39.54% 0.01 -0.1342)
OKLCH	oklch(39.54% 0.135 274.3)
XYZ	xyz(7.7353, 5.7542, 25.8972)
Luminance	0.0575 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#333B8D #8D8533

analogous

#33688D #333B8D #58338D

triadic

#333B8D #8D333B #3B8D33

tetradic

#333B8D #8D3368 #8D8533 #338D58

square

#333B8D #8D3368 #8D8533 #338D58

split-complementary

#333B8D #8D5833 #688D33

monochromatic

#121533 #232860 #333B8D #434EBA #6F78CB

Accessibility & contrast

On white

9.76

#333B8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#333B8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333B8D

9.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333B8D	#FFFFFF	#000000	##FFFFFF
##333B8D	1.00	9.76	2.15	9.76
#FFFFFF	9.76	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004890

Deuteranopia (green-blind)

#00408B

Tritanopia (blue-blind)

#004F5E

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #333b8d;
/* rgb */ color: rgb(51, 59, 141);
/* oklch */ color: oklch(39.5% 0.135 274.3);

Tailwind

colors: {
  custom: {
    50: '#7570af',
    500: '#333b8d',
    950: '#000000',
  },
}

SCSS

$custom: #333b8d;
$custom-light: #7570af;
$custom-dark: #000000;

JSON

{
  "hex": "#333b8d",
  "rgb": {
    "r": 51,
    "g": 59,
    "b": 141
  },
  "hsl": {
    "h": 234.667,
    "s": 46.875,
    "l": 37.647
  },
  "oklch": {
    "l": 0.39537,
    "c": 0.13457,
    "h": 274.3
  },
  "luminance": 0.05755
}

Semantic roles & 50–950 ramp

primary

#333B8D

secondary

#B3AC69

accent

#CB51D7

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #333B8D

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

Preview Lab → · Contrast checker → · Palette generator →