#3339B4#3339B4

#3339B4 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.7% C 0.190 H 272.9°. Best body text is #FFFFFF at 8.81:1 contrast (WCAG AA passes).

Color values

HEX	#3339B4
RGB	rgb(51, 57, 180)
HSL	hsl(237, 56%, 45%)
HSV	hsv(237, 72%, 71%)
CMYK	cmyk(71.7%, 68.3%, 0%, 29.4%)
CIE-LAB	lab(31.63, 38.81, -65.65)
CIE-LCH	lch(31.63, 76.27, 300.59°)
OKLab	oklab(42.66% 0.0095 -0.1898)
OKLCH	oklch(42.66% 0.19 272.9)
XYZ	xyz(11.0638, 6.9243, 43.9246)
Luminance	0.0693 (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

#3339B4 #B4AE33

analogous

#337AB4 #3339B4 #6D33B4

triadic

#3339B4 #B43339 #39B433

tetradic

#3339B4 #B4337A #B4AE33 #33B46D

square

#3339B4 #B4337A #B4AE33 #33B46D

split-complementary

#3339B4 #B46D33 #7AB433

monochromatic

#181B55 #252A84 #3339B4 #555BCF #8589DC

Accessibility & contrast

On white

8.81

#3339B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#3339B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3339B4

8.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3339B4	#FFFFFF	#000000	##FFFFFF
##3339B4	1.00	8.81	2.39	8.81
#FFFFFF	8.81	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B8

Deuteranopia (green-blind)

#0044B2

Tritanopia (blue-blind)

#005A72

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3339b4;
/* rgb */ color: rgb(51, 57, 180);
/* oklch */ color: oklch(42.7% 0.190 272.9);

Tailwind

colors: {
  custom: {
    50: '#7d70cc',
    500: '#3339b4',
    950: '#000000',
  },
}

SCSS

$custom: #3339b4;
$custom-light: #7d70cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3339b4",
  "rgb": {
    "r": 51,
    "g": 57,
    "b": 180
  },
  "hsl": {
    "h": 237.209,
    "s": 55.844,
    "l": 45.294
  },
  "oklch": {
    "l": 0.42664,
    "c": 0.19004,
    "h": 272.9
  },
  "luminance": 0.06925
}

Semantic roles & 50–950 ramp

primary

#3339B4

secondary

#C6C37D

accent

#D849DF

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3339B4

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

Preview Lab → · Contrast checker → · Palette generator →