#3339B5#3339B5

#3339B5 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.8% C 0.191 H 272.8°. Best body text is #FFFFFF at 8.77:1 contrast (WCAG AA passes).

Color values

HEX	#3339B5
RGB	rgb(51, 57, 181)
HSL	hsl(237, 56%, 45%)
HSV	hsv(237, 72%, 71%)
CMYK	cmyk(71.8%, 68.5%, 0%, 29%)
CIE-LAB	lab(31.73, 39.16, -66.09)
CIE-LCH	lch(31.73, 76.82, 300.65°)
OKLab	oklab(42.76% 0.0094 -0.1911)
OKLCH	oklch(42.76% 0.191 272.8)
XYZ	xyz(11.1661, 6.9651, 44.4630)
Luminance	0.0697 (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

#3339B5 #B5AF33

analogous

#337AB5 #3339B5 #6E33B5

triadic

#3339B5 #B53339 #39B533

tetradic

#3339B5 #B5337A #B5AF33 #33B56E

square

#3339B5 #B5337A #B5AF33 #33B56E

split-complementary

#3339B5 #B56E33 #7AB533

monochromatic

#181B56 #262A85 #3339B5 #565BCF #868ADD

Accessibility & contrast

On white

8.77

#3339B5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#3339B5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3339B5

8.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3339B5	#FFFFFF	#000000	##FFFFFF
##3339B5	1.00	8.77	2.39	8.77
#FFFFFF	8.77	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B9

Deuteranopia (green-blind)

#0045B3

Tritanopia (blue-blind)

#005B72

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3339b5;
/* rgb */ color: rgb(51, 57, 181);
/* oklch */ color: oklch(42.8% 0.191 272.8);

Tailwind

colors: {
  custom: {
    50: '#7e70cc',
    500: '#3339b5',
    950: '#000000',
  },
}

SCSS

$custom: #3339b5;
$custom-light: #7e70cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3339b5",
  "rgb": {
    "r": 51,
    "g": 57,
    "b": 181
  },
  "hsl": {
    "h": 237.231,
    "s": 56.034,
    "l": 45.49
  },
  "oklch": {
    "l": 0.4276,
    "c": 0.19131,
    "h": 272.8
  },
  "luminance": 0.06966
}

Semantic roles & 50–950 ramp

primary

#3339B5

secondary

#C6C37D

accent

#D848DF

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0714

muted

#7C7A82

Preview Lab

Preview with #3339B5

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

Preview Lab → · Contrast checker → · Palette generator →