#3121AD#3121AD

#3121AD is a dark, highly saturated blue. Relative luminance 0.048; OKLCH L 38.4% C 0.205 H 275.8°. Best body text is #FFFFFF at 10.76:1 contrast (WCAG AA passes).

Color values

HEX	#3121AD
RGB	rgb(49, 33, 173)
HSL	hsl(247, 68%, 40%)
HSV	hsv(247, 81%, 68%)
CMYK	cmyk(71.7%, 80.9%, 0%, 32.2%)
CIE-LAB	lab(26.03, 49.65, -70.72)
CIE-LCH	lch(26.03, 86.41, 305.07°)
OKLab	oklab(38.44% 0.0207 -0.2044)
OKLCH	oklch(38.44% 0.205 275.8)
XYZ	xyz(9.3508, 4.7569, 39.9524)
Luminance	0.0476 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3121AD #9DAD21

analogous

#2157AD #3121AD #7721AD

triadic

#3121AD #AD3121 #21AD31

tetradic

#3121AD #AD2157 #9DAD21 #21AD77

square

#3121AD #AD2157 #9DAD21 #21AD77

split-complementary

#3121AD #AD7721 #57AD21

monochromatic

#140D46 #22177A #3121AD #4633D8 #7566E2

Accessibility & contrast

On white

10.76

#3121AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#3121AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3121AD

10.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3121AD	#FFFFFF	#000000	##FFFFFF
##3121AD	1.00	10.76	1.95	10.76
#FFFFFF	10.76	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043B1

Deuteranopia (green-blind)

#0037AB

Tritanopia (blue-blind)

#004D68

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #3121ad;
/* rgb */ color: rgb(49, 33, 173);
/* oklch */ color: oklch(38.4% 0.205 275.8);

Tailwind

colors: {
  custom: {
    50: '#7d61c7',
    500: '#3121ad',
    950: '#000000',
  },
}

SCSS

$custom: #3121ad;
$custom-light: #7d61c7;
$custom-dark: #000000;

JSON

{
  "hex": "#3121ad",
  "rgb": {
    "r": 49,
    "g": 33,
    "b": 173
  },
  "hsl": {
    "h": 246.857,
    "s": 67.961,
    "l": 40.392
  },
  "oklch": {
    "l": 0.38437,
    "c": 0.20548,
    "h": 275.8
  },
  "luminance": 0.04758
}

Semantic roles & 50–950 ramp

primary

#3121AD

secondary

#BCC762

accent

#EB3DD7

background

#F8F5FC

surface

#F0EAF8

border

#CBC6D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #3121AD

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

Preview Lab → · Contrast checker → · Palette generator →