#3121A0#3121A0

#3121A0 is a dark, vivid blue. Relative luminance 0.043; OKLCH L 37.0% C 0.190 H 277.3°. Best body text is #FFFFFF at 11.32:1 contrast (WCAG AA passes).

Color values

HEX	#3121A0
RGB	rgb(49, 33, 160)
HSL	hsl(248, 66%, 38%)
HSV	hsv(248, 79%, 63%)
CMYK	cmyk(69.4%, 79.4%, 0%, 37.3%)
CIE-LAB	lab(24.57, 45.65, -65.27)
CIE-LCH	lch(24.57, 79.64, 304.97°)
OKLab	oklab(36.99% 0.0243 -0.1886)
OKLCH	oklch(36.99% 0.19 277.3)
XYZ	xyz(8.1536, 4.2780, 33.6469)
Luminance	0.0428 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3121A0 #90A021

analogous

#2150A0 #3121A0 #7021A0

triadic

#3121A0 #A03121 #21A031

tetradic

#3121A0 #A02150 #90A021 #21A070

square

#3121A0 #A02150 #90A021 #21A070

split-complementary

#3121A0 #A07021 #50A021

monochromatic

#120C3B #21176D #3121A0 #412BD3 #6E5EDE

Accessibility & contrast

On white

11.32

#3121A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#3121A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3121A0

11.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3121A0	#FFFFFF	#000000	##FFFFFF
##3121A0	1.00	11.32	1.86	11.32
#FFFFFF	11.32	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003FA4

Deuteranopia (green-blind)

#00359E

Tritanopia (blue-blind)

#004760

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #3121a0;
/* rgb */ color: rgb(49, 33, 160);
/* oklch */ color: oklch(37.0% 0.190 277.3);

Tailwind

colors: {
  custom: {
    50: '#7a60bd',
    500: '#3121a0',
    950: '#000000',
  },
}

SCSS

$custom: #3121a0;
$custom-light: #7a60bd;
$custom-dark: #000000;

JSON

{
  "hex": "#3121a0",
  "rgb": {
    "r": 49,
    "g": 33,
    "b": 160
  },
  "hsl": {
    "h": 247.559,
    "s": 65.803,
    "l": 37.843
  },
  "oklch": {
    "l": 0.36992,
    "c": 0.19014,
    "h": 277.3
  },
  "luminance": 0.04279
}

Semantic roles & 50–950 ramp

primary

#3121A0

secondary

#B5C25B

accent

#E93FD3

background

#F8F5FB

surface

#EFEAF7

border

#CAC6D0

text

#0B0512

muted

#7C7981

Preview Lab

Preview with #3121A0

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

Preview Lab → · Contrast checker → · Palette generator →