#333B8F#333B8F

#333B8F is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.7% C 0.137 H 274.2°. Best body text is #FFFFFF at 9.71:1 contrast (WCAG AA passes).

Color values

HEX	#333B8F
RGB	rgb(51, 59, 143)
HSL	hsl(235, 47%, 38%)
HSV	hsv(235, 64%, 56%)
CMYK	cmyk(64.3%, 58.7%, 0%, 43.9%)
CIE-LAB	lab(28.94, 24.37, -47.68)
CIE-LCH	lch(28.94, 53.55, 297.07°)
OKLab	oklab(39.7% 0.01 -0.1371)
OKLCH	oklch(39.7% 0.137 274.2)
XYZ	xyz(7.8855, 5.8143, 26.6880)
Luminance	0.0582 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#333B8F #8F8733

analogous

#33698F #333B8F #59338F

triadic

#333B8F #8F333B #3B8F33

tetradic

#333B8F #8F3369 #8F8733 #338F59

square

#333B8F #8F3369 #8F8733 #338F59

split-complementary

#333B8F #8F5933 #698F33

monochromatic

#131635 #232862 #333B8F #434EBC #7078CC

Accessibility & contrast

On white

9.71

#333B8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#333B8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333B8F

9.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333B8F	#FFFFFF	#000000	##FFFFFF
##333B8F	1.00	9.71	2.16	9.71
#FFFFFF	9.71	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004892

Deuteranopia (green-blind)

#00408D

Tritanopia (blue-blind)

#004F5F

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #333b8f;
/* rgb */ color: rgb(51, 59, 143);
/* oklch */ color: oklch(39.7% 0.137 274.2);

Tailwind

colors: {
  custom: {
    50: '#7570b0',
    500: '#333b8f',
    950: '#000000',
  },
}

SCSS

$custom: #333b8f;
$custom-light: #7570b0;
$custom-dark: #000000;

JSON

{
  "hex": "#333b8f",
  "rgb": {
    "r": 51,
    "g": 59,
    "b": 143
  },
  "hsl": {
    "h": 234.783,
    "s": 47.423,
    "l": 38.039
  },
  "oklch": {
    "l": 0.39701,
    "c": 0.13745,
    "h": 274.2
  },
  "luminance": 0.05815
}

Semantic roles & 50–950 ramp

primary

#333B8F

secondary

#B4AE6A

accent

#CB51D7

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#090711

muted

#7B7A80

Preview Lab

Preview with #333B8F

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

Preview Lab → · Contrast checker → · Palette generator →