#333FBB#333FBB

#333FBB is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.3% C 0.192 H 271.5°. Best body text is #FFFFFF at 8.17:1 contrast (WCAG AA passes).

Color values

HEX	#333FBB
RGB	rgb(51, 63, 187)
HSL	hsl(235, 57%, 47%)
HSV	hsv(235, 73%, 73%)
CMYK	cmyk(72.7%, 66.3%, 0%, 26.7%)
CIE-LAB	lab(33.66, 37.55, -66.47)
CIE-LCH	lch(33.66, 76.34, 299.46°)
OKLab	oklab(44.33% 0.0051 -0.1922)
OKLCH	oklch(44.33% 0.192 271.5)
XYZ	xyz(12.1094, 7.8454, 47.8802)
Luminance	0.0785 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#333FBB #BBAF33

analogous

#3383BB #333FBB #6B33BB

triadic

#333FBB #BB333F #3FBB33

tetradic

#333FBB #BB3383 #BBAF33 #33BB6B

square

#333FBB #BB3383 #BBAF33 #33BB6B

split-complementary

#333FBB #BB6B33 #83BB33

monochromatic

#191F5B #262F8B #333FBB #5964D2 #8991DF

Accessibility & contrast

On white

8.17

#333FBB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#333FBB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333FBB

8.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333FBB	#FFFFFF	#000000	##FFFFFF
##333FBB	1.00	8.17	2.57	8.17
#FFFFFF	8.17	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056BF

Deuteranopia (green-blind)

#0049B9

Tritanopia (blue-blind)

#006077

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #333fbb;
/* rgb */ color: rgb(51, 63, 187);
/* oklch */ color: oklch(44.3% 0.192 271.5);

Tailwind

colors: {
  custom: {
    50: '#7e74d1',
    500: '#333fbb',
    950: '#000000',
  },
}

SCSS

$custom: #333fbb;
$custom-light: #7e74d1;
$custom-dark: #000000;

JSON

{
  "hex": "#333fbb",
  "rgb": {
    "r": 51,
    "g": 63,
    "b": 187
  },
  "hsl": {
    "h": 234.706,
    "s": 57.143,
    "l": 46.667
  },
  "oklch": {
    "l": 0.44331,
    "c": 0.19224,
    "h": 271.5
  },
  "luminance": 0.07847
}

Semantic roles & 50–950 ramp

primary

#333FBB

secondary

#C9C381

accent

#D347E0

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #333FBB

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

Preview Lab → · Contrast checker → · Palette generator →