#333CB0#333CB0

#333CB0 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.8% C 0.181 H 272.5°. Best body text is #FFFFFF at 8.70:1 contrast (WCAG AA passes).

Color values

HEX#333CB0
RGBrgb(51, 60, 176)
HSLhsl(236, 55%, 45%)
HSVhsv(236, 71%, 69%)
CMYKcmyk(71%, 65.9%, 0%, 31%)
CIE-LABlab(31.96, 35.55, -62.73)
CIE-LCHlch(31.96, 72.10, 299.54°)
OKLaboklab(42.79% 0.008 -0.1812)
OKLCHoklch(42.79% 0.181 272.5)
XYZxyz(10.8149, 7.0691, 41.8604)
Luminance0.0707 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#333CB0 #B0A733
analogous
#337BB0 #333CB0 #6933B0
triadic
#333CB0 #B0333C #3CB033
tetradic
#333CB0 #B0337B #B0A733 #33B069
square
#333CB0 #B0337B #B0A733 #33B069
split-complementary
#333CB0 #B06933 #7BB033
monochromatic
#181C51 #252C81 #333CB0 #535CCD #8289DB

Accessibility & contrast

On white

8.70
#333CB0 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.41
#333CB0 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333CB0
8.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##333CB0#FFFFFF#000000##FFFFFF
##333CB01.008.702.418.70
#FFFFFF8.701.0021.001.00
#0000002.4121.001.0021.00
##FFFFFF8.701.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0051B4
Deuteranopia (green-blind)
#0045AE
Tritanopia (blue-blind)
#005B70
Achromatopsia (no color)
#4B4B4B

Design tokens & code

CSS
--color: #333cb0;
/* rgb */ color: rgb(51, 60, 176);
/* oklch */ color: oklch(42.8% 0.181 272.5);
Tailwind
colors: {
  custom: {
    50: '#7c72c9',
    500: '#333cb0',
    950: '#000000',
  },
}
SCSS
$custom: #333cb0;
$custom-light: #7c72c9;
$custom-dark: #000000;
JSON
{
  "hex": "#333cb0",
  "rgb": {
    "r": 51,
    "g": 60,
    "b": 176
  },
  "hsl": {
    "h": 235.68,
    "s": 55.066,
    "l": 44.51
  },
  "oklch": {
    "l": 0.42791,
    "c": 0.18141,
    "h": 272.5
  },
  "luminance": 0.0707
}

Semantic roles & 50–950 ramp

primary
#333CB0
secondary
#C4BF7B
accent
#D449DE
background
#F8F6FC
surface
#EFECF8
border
#CAC7D1
text
#0B0813
muted
#7C7B82

Preview Lab

Preview with #333CB0

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

Preview Lab → · Contrast checker → · Palette generator →

#333CB0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva