#3339B8#3339B8

#3339B8 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 43.0% C 0.195 H 272.7°. Best body text is #FFFFFF at 8.68:1 contrast (WCAG AA passes).

Color values

HEX	#3339B8
RGB	rgb(51, 57, 184)
HSL	hsl(237, 57%, 46%)
HSV	hsv(237, 72%, 72%)
CMYK	cmyk(72.3%, 69%, 0%, 27.8%)
CIE-LAB	lab(32.01, 40.20, -67.41)
CIE-LCH	lch(32.01, 78.48, 300.81°)
OKLab	oklab(43.05% 0.0091 -0.1949)
OKLCH	oklch(43.05% 0.195 272.7)
XYZ	xyz(11.4772, 7.0896, 46.1017)
Luminance	0.0709 (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

#3339B8 #B8B233

analogous

#337BB8 #3339B8 #6F33B8

triadic

#3339B8 #B83339 #39B833

tetradic

#3339B8 #B8337B #B8B233 #33B86F

square

#3339B8 #B8337B #B8B233 #33B86F

split-complementary

#3339B8 #B86F33 #7BB833

monochromatic

#181B58 #262A88 #3339B8 #585DD1 #888BDE

Accessibility & contrast

On white

8.68

#3339B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#3339B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3339B8

8.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3339B8	#FFFFFF	#000000	##FFFFFF
##3339B8	1.00	8.68	2.42	8.68
#FFFFFF	8.68	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BC

Deuteranopia (green-blind)

#0045B6

Tritanopia (blue-blind)

#005C74

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3339b8;
/* rgb */ color: rgb(51, 57, 184);
/* oklch */ color: oklch(43.0% 0.195 272.7);

Tailwind

colors: {
  custom: {
    50: '#7e70ce',
    500: '#3339b8',
    950: '#000000',
  },
}

SCSS

$custom: #3339b8;
$custom-light: #7e70ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3339b8",
  "rgb": {
    "r": 51,
    "g": 57,
    "b": 184
  },
  "hsl": {
    "h": 237.293,
    "s": 56.596,
    "l": 46.078
  },
  "oklch": {
    "l": 0.4305,
    "c": 0.19513,
    "h": 272.7
  },
  "luminance": 0.07091
}

Semantic roles & 50–950 ramp

primary

#3339B8

secondary

#C8C47F

accent

#D948E0

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0B0714

muted

#7C7A82

Preview Lab

Preview with #3339B8

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

Preview Lab → · Contrast checker → · Palette generator →