#3339BC#3339BC

#3339BC is a dark, highly saturated blue. Relative luminance 0.073; OKLCH L 43.4% C 0.200 H 272.5°. Best body text is #FFFFFF at 8.56:1 contrast (WCAG AA passes).

Color values

HEX	#3339BC
RGB	rgb(51, 57, 188)
HSL	hsl(237, 57%, 47%)
HSV	hsv(237, 73%, 74%)
CMYK	cmyk(72.9%, 69.7%, 0%, 26.3%)
CIE-LAB	lab(32.39, 41.57, -69.14)
CIE-LCH	lch(32.39, 80.68, 301.01°)
OKLab	oklab(43.44% 0.0086 -0.2)
OKLCH	oklch(43.44% 0.2 272.5)
XYZ	xyz(11.9024, 7.2597, 48.3412)
Luminance	0.0726 (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

#3339BC #BCB633

analogous

#337EBC #3339BC #7233BC

triadic

#3339BC #BC3339 #39BC33

tetradic

#3339BC #BC337E #BCB633 #33BC72

square

#3339BC #BC337E #BCB633 #33BC72

split-complementary

#3339BC #BC7233 #7EBC33

monochromatic

#191C5C #262A8C #3339BC #5A5FD2 #8A8EDF

Accessibility & contrast

On white

8.56

#3339BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#3339BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3339BC

8.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3339BC	#FFFFFF	#000000	##FFFFFF
##3339BC	1.00	8.56	2.45	8.56
#FFFFFF	8.56	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053C0

Deuteranopia (green-blind)

#0046BA

Tritanopia (blue-blind)

#005D76

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3339bc;
/* rgb */ color: rgb(51, 57, 188);
/* oklch */ color: oklch(43.4% 0.200 272.5);

Tailwind

colors: {
  custom: {
    50: '#7f70d1',
    500: '#3339bc',
    950: '#000000',
  },
}

SCSS

$custom: #3339bc;
$custom-light: #7f70d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3339bc",
  "rgb": {
    "r": 51,
    "g": 57,
    "b": 188
  },
  "hsl": {
    "h": 237.372,
    "s": 57.322,
    "l": 46.863
  },
  "oklch": {
    "l": 0.4344,
    "c": 0.20017,
    "h": 272.5
  },
  "luminance": 0.07261
}

Semantic roles & 50–950 ramp

primary

#3339BC

secondary

#C9C681

accent

#DA47E1

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3339BC

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

Preview Lab → · Contrast checker → · Palette generator →