#3133A7#3133A7

#3133A7 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 40.3% C 0.181 H 274.0°. Best body text is #FFFFFF at 9.71:1 contrast (WCAG AA passes).

Color values

HEX	#3133A7
RGB	rgb(49, 51, 167)
HSL	hsl(239, 55%, 42%)
HSV	hsv(239, 71%, 65%)
CMYK	cmyk(70.7%, 69.5%, 0%, 34.5%)
CIE-LAB	lab(28.93, 37.76, -62.33)
CIE-LCH	lch(28.93, 72.87, 301.21°)
OKLab	oklab(40.3% 0.0126 -0.1801)
OKLCH	oklch(40.3% 0.181 274)
XYZ	xyz(9.4232, 5.8097, 37.1765)
Luminance	0.0581 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3133A7 #A7A531

analogous

#316EA7 #3133A7 #6A31A7

triadic

#3133A7 #A73133 #33A731

tetradic

#3133A7 #A7316E #A7A531 #31A76A

square

#3133A7 #A7316E #A7A531 #31A76A

split-complementary

#3133A7 #A76A31 #6EA731

monochromatic

#151648 #232578 #3133A7 #4B4DCA #7A7CD8

Accessibility & contrast

On white

9.71

#3133A7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#3133A7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3133A7

9.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3133A7	#FFFFFF	#000000	##FFFFFF
##3133A7	1.00	9.71	2.16	9.71
#FFFFFF	9.71	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AAB

Deuteranopia (green-blind)

#003FA5

Tritanopia (blue-blind)

#005369

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #3133a7;
/* rgb */ color: rgb(49, 51, 167);
/* oklch */ color: oklch(40.3% 0.181 274.0);

Tailwind

colors: {
  custom: {
    50: '#7a6bc2',
    500: '#3133a7',
    950: '#000000',
  },
}

SCSS

$custom: #3133a7;
$custom-light: #7a6bc2;
$custom-dark: #000000;

JSON

{
  "hex": "#3133a7",
  "rgb": {
    "r": 49,
    "g": 51,
    "b": 167
  },
  "hsl": {
    "h": 238.983,
    "s": 54.63,
    "l": 42.353
  },
  "oklch": {
    "l": 0.40302,
    "c": 0.18057,
    "h": 274
  },
  "luminance": 0.05811
}

Semantic roles & 50–950 ramp

primary

#3133A7

secondary

#C1BF73

accent

#DB4ADE

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3133A7

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

Preview Lab → · Contrast checker → · Palette generator →