#3337BC#3337BC

#3337BC is a dark, highly saturated blue. Relative luminance 0.071; OKLCH L 43.1% C 0.202 H 272.7°. Best body text is #FFFFFF at 8.70:1 contrast (WCAG AA passes).

Color values

HEX	#3337BC
RGB	rgb(51, 55, 188)
HSL	hsl(238, 57%, 47%)
HSV	hsv(238, 73%, 74%)
CMYK	cmyk(72.9%, 70.7%, 0%, 26.3%)
CIE-LAB	lab(31.96, 42.76, -69.86)
CIE-LCH	lch(31.96, 81.91, 301.47°)
OKLab	oklab(43.13% 0.0097 -0.2021)
OKLCH	oklch(43.13% 0.202 272.7)
XYZ	xyz(11.8055, 7.0658, 48.3089)
Luminance	0.0707 (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

#3337BC #BCB833

analogous

#337CBC #3337BC #7433BC

triadic

#3337BC #BC3337 #37BC33

tetradic

#3337BC #BC337C #BCB833 #33BC74

square

#3337BC #BC337C #BCB833 #33BC74

split-complementary

#3337BC #BC7433 #7CBC33

monochromatic

#191B5C #26298C #3337BC #5A5DD2 #8A8DDF

Accessibility & contrast

On white

8.70

#3337BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#3337BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3337BC

8.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3337BC	#FFFFFF	#000000	##FFFFFF
##3337BC	1.00	8.70	2.41	8.70
#FFFFFF	8.70	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052C0

Deuteranopia (green-blind)

#0045BA

Tritanopia (blue-blind)

#005C75

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3337bc;
/* rgb */ color: rgb(51, 55, 188);
/* oklch */ color: oklch(43.1% 0.202 272.7);

Tailwind

colors: {
  custom: {
    50: '#7f6fd1',
    500: '#3337bc',
    950: '#000000',
  },
}

SCSS

$custom: #3337bc;
$custom-light: #7f6fd1;
$custom-dark: #000000;

JSON

{
  "hex": "#3337bc",
  "rgb": {
    "r": 51,
    "g": 55,
    "b": 188
  },
  "hsl": {
    "h": 238.248,
    "s": 57.322,
    "l": 46.863
  },
  "oklch": {
    "l": 0.43127,
    "c": 0.20231,
    "h": 272.7
  },
  "luminance": 0.07067
}

Semantic roles & 50–950 ramp

primary

#3337BC

secondary

#C9C781

accent

#DC47E1

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3337BC

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

Preview Lab → · Contrast checker → · Palette generator →