#3121A4#3121A4

#3121A4 is a dark, vivid blue. Relative luminance 0.044; OKLCH L 37.4% C 0.195 H 276.8°. Best body text is #FFFFFF at 11.15:1 contrast (WCAG AA passes).

Color values

HEX	#3121A4
RGB	rgb(49, 33, 164)
HSL	hsl(247, 66%, 39%)
HSV	hsv(247, 80%, 64%)
CMYK	cmyk(70.1%, 79.9%, 0%, 35.7%)
CIE-LAB	lab(25.01, 46.89, -66.96)
CIE-LCH	lch(25.01, 81.75, 305.00°)
OKLab	oklab(37.43% 0.0232 -0.1935)
OKLCH	oklch(37.43% 0.195 276.8)
XYZ	xyz(8.5091, 4.4202, 35.5195)
Luminance	0.0442 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3121A4 #94A421

analogous

#2152A4 #3121A4 #7221A4

triadic

#3121A4 #A43121 #21A431

tetradic

#3121A4 #A42152 #94A421 #21A472

square

#3121A4 #A42152 #94A421 #21A472

split-complementary

#3121A4 #A47221 #52A421

monochromatic

#130C3E #221771 #3121A4 #422DD5 #7060DF

Accessibility & contrast

On white

11.15

#3121A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#3121A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3121A4

11.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3121A4	#FFFFFF	#000000	##FFFFFF
##3121A4	1.00	11.15	1.88	11.15
#FFFFFF	11.15	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041A8

Deuteranopia (green-blind)

#0036A2

Tritanopia (blue-blind)

#004963

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #3121a4;
/* rgb */ color: rgb(49, 33, 164);
/* oklch */ color: oklch(37.4% 0.195 276.8);

Tailwind

colors: {
  custom: {
    50: '#7b60c0',
    500: '#3121a4',
    950: '#000000',
  },
}

SCSS

$custom: #3121a4;
$custom-light: #7b60c0;
$custom-dark: #000000;

JSON

{
  "hex": "#3121a4",
  "rgb": {
    "r": 49,
    "g": 33,
    "b": 164
  },
  "hsl": {
    "h": 247.328,
    "s": 66.497,
    "l": 38.627
  },
  "oklch": {
    "l": 0.37433,
    "c": 0.19491,
    "h": 276.8
  },
  "luminance": 0.04421
}

Semantic roles & 50–950 ramp

primary

#3121A4

secondary

#B7C45D

accent

#E93ED5

background

#F8F5FC

surface

#EFEAF8

border

#CAC6D1

text

#0B0512

muted

#7C7981

Preview Lab

Preview with #3121A4

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

Preview Lab → · Contrast checker → · Palette generator →