#3121A1#3121A1

#3121A1 is a dark, vivid blue. Relative luminance 0.043; OKLCH L 37.1% C 0.191 H 277.2°. Best body text is #FFFFFF at 11.27:1 contrast (WCAG AA passes).

Color values

HEX	#3121A1
RGB	rgb(49, 33, 161)
HSL	hsl(248, 66%, 38%)
HSV	hsv(248, 80%, 63%)
CMYK	cmyk(69.6%, 79.5%, 0%, 36.9%)
CIE-LAB	lab(24.68, 45.96, -65.69)
CIE-LCH	lch(24.68, 80.17, 304.98°)
OKLab	oklab(37.1% 0.024 -0.1898)
OKLCH	oklch(37.1% 0.191 277.2)
XYZ	xyz(8.2414, 4.3132, 34.1095)
Luminance	0.0431 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3121A1 #91A121

analogous

#2151A1 #3121A1 #7121A1

triadic

#3121A1 #A13121 #21A131

tetradic

#3121A1 #A12151 #91A121 #21A171

square

#3121A1 #A12151 #91A121 #21A171

split-complementary

#3121A1 #A17121 #51A121

monochromatic

#120C3B #22176E #3121A1 #412CD4 #6E5EDE

Accessibility & contrast

On white

11.27

#3121A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#3121A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3121A1

11.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3121A1	#FFFFFF	#000000	##FFFFFF
##3121A1	1.00	11.27	1.86	11.27
#FFFFFF	11.27	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0040A5

Deuteranopia (green-blind)

#00359F

Tritanopia (blue-blind)

#004861

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #3121a1;
/* rgb */ color: rgb(49, 33, 161);
/* oklch */ color: oklch(37.1% 0.191 277.2);

Tailwind

colors: {
  custom: {
    50: '#7a60be',
    500: '#3121a1',
    950: '#000000',
  },
}

SCSS

$custom: #3121a1;
$custom-light: #7a60be;
$custom-dark: #000000;

JSON

{
  "hex": "#3121a1",
  "rgb": {
    "r": 49,
    "g": 33,
    "b": 161
  },
  "hsl": {
    "h": 247.5,
    "s": 65.979,
    "l": 38.039
  },
  "oklch": {
    "l": 0.37102,
    "c": 0.19134,
    "h": 277.2
  },
  "luminance": 0.04314
}

Semantic roles & 50–950 ramp

primary

#3121A1

secondary

#B6C35B

accent

#E93FD4

background

#F8F5FB

surface

#EFEAF7

border

#CAC6D0

text

#0B0512

muted

#7C7981

Preview Lab

Preview with #3121A1

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

Preview Lab → · Contrast checker → · Palette generator →