#333F9F#333F9F

#333F9F is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.8% C 0.155 H 272.4°. Best body text is #FFFFFF at 8.93:1 contrast (WCAG AA passes).

Color values

HEX	#333F9F
RGB	rgb(51, 63, 159)
HSL	hsl(233, 51%, 41%)
HSV	hsv(233, 68%, 62%)
CMYK	cmyk(67.9%, 60.4%, 0%, 37.6%)
CIE-LAB	lab(31.26, 27.52, -53.68)
CIE-LCH	lch(31.26, 60.32, 297.14°)
OKLab	oklab(41.82% 0.0065 -0.1547)
OKLCH	oklch(41.82% 0.155 272.4)
XYZ	xyz(9.3987, 6.7612, 33.6039)
Luminance	0.0676 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#333F9F #9F9333

analogous

#33759F #333F9F #5D339F

triadic

#333F9F #9F333F #3F9F33

tetradic

#333F9F #9F3375 #9F9333 #339F5D

square

#333F9F #9F3375 #9F9333 #339F5D

split-complementary

#333F9F #9F5D33 #759F33

monochromatic

#151A42 #242D71 #333F9F #4A58C5 #7983D4

Accessibility & contrast

On white

8.93

#333F9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#333F9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333F9F

8.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333F9F	#FFFFFF	#000000	##FFFFFF
##333F9F	1.00	8.93	2.35	8.93
#FFFFFF	8.93	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA2

Deuteranopia (green-blind)

#00459D

Tritanopia (blue-blind)

#005769

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #333f9f;
/* rgb */ color: rgb(51, 63, 159);
/* oklch */ color: oklch(41.8% 0.155 272.4);

Tailwind

colors: {
  custom: {
    50: '#7874bc',
    500: '#333f9f',
    950: '#000000',
  },
}

SCSS

$custom: #333f9f;
$custom-light: #7874bc;
$custom-dark: #000000;

JSON

{
  "hex": "#333f9f",
  "rgb": {
    "r": 51,
    "g": 63,
    "b": 159
  },
  "hsl": {
    "h": 233.333,
    "s": 51.429,
    "l": 41.176
  },
  "oklch": {
    "l": 0.41823,
    "c": 0.1548,
    "h": 272.4
  },
  "luminance": 0.06762
}

Semantic roles & 50–950 ramp

primary

#333F9F

secondary

#BCB471

accent

#CB4DDB

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #333F9F

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

Preview Lab → · Contrast checker → · Palette generator →