#3133B9#3133B9

#3133B9 is a dark, highly saturated blue. Relative luminance 0.065; OKLCH L 42.1% C 0.203 H 272.8°. Best body text is #FFFFFF at 9.11:1 contrast (WCAG AA passes).

Color values

HEX	#3133B9
RGB	rgb(49, 51, 185)
HSL	hsl(239, 58%, 46%)
HSV	hsv(239, 74%, 73%)
CMYK	cmyk(73.5%, 72.4%, 0%, 27.5%)
CIE-LAB	lab(30.69, 43.90, -70.17)
CIE-LCH	lch(30.69, 82.77, 302.03°)
OKLab	oklab(42.1% 0.01 -0.203)
OKLCH	oklch(42.1% 0.203 272.8)
XYZ	xyz(11.2045, 6.5223, 46.5580)
Luminance	0.0652 (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

#3133B9 #B9B731

analogous

#3177B9 #3133B9 #7331B9

triadic

#3133B9 #B93133 #33B931

tetradic

#3133B9 #B93177 #B9B731 #31B973

square

#3133B9 #B93177 #B9B731 #31B973

split-complementary

#3133B9 #B97331 #77B931

monochromatic

#171858 #242689 #3133B9 #5557D2 #8687DF

Accessibility & contrast

On white

9.11

#3133B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#3133B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3133B9

9.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3133B9	#FFFFFF	#000000	##FFFFFF
##3133B9	1.00	9.11	2.30	9.11
#FFFFFF	9.11	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FBD

Deuteranopia (green-blind)

#0042B7

Tritanopia (blue-blind)

#005973

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3133b9;
/* rgb */ color: rgb(49, 51, 185);
/* oklch */ color: oklch(42.1% 0.203 272.8);

Tailwind

colors: {
  custom: {
    50: '#7e6ccf',
    500: '#3133b9',
    950: '#000000',
  },
}

SCSS

$custom: #3133b9;
$custom-light: #7e6ccf;
$custom-dark: #000000;

JSON

{
  "hex": "#3133b9",
  "rgb": {
    "r": 49,
    "g": 51,
    "b": 185
  },
  "hsl": {
    "h": 239.118,
    "s": 58.12,
    "l": 45.882
  },
  "oklch": {
    "l": 0.42102,
    "c": 0.20326,
    "h": 272.8
  },
  "luminance": 0.06523
}

Semantic roles & 50–950 ramp

primary

#3133B9

secondary

#C8C77D

accent

#DF46E1

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3133B9

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

Preview Lab → · Contrast checker → · Palette generator →