#3121B2#3121B2

#3121B2 is a dark, highly saturated blue. Relative luminance 0.050; OKLCH L 39.0% C 0.211 H 275.3°. Best body text is #FFFFFF at 10.55:1 contrast (WCAG AA passes).

Color values

HEX	#3121B2
RGB	rgb(49, 33, 178)
HSL	hsl(247, 69%, 41%)
HSV	hsv(247, 81%, 70%)
CMYK	cmyk(72.5%, 81.5%, 0%, 30.2%)
CIE-LAB	lab(26.60, 51.17, -72.76)
CIE-LCH	lch(26.60, 88.96, 305.12°)
OKLab	oklab(39% 0.0194 -0.2104)
OKLCH	oklch(39% 0.211 275.3)
XYZ	xyz(9.8437, 4.9541, 42.5483)
Luminance	0.0495 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3121B2 #A2B221

analogous

#215AB2 #3121B2 #7A21B2

triadic

#3121B2 #B23121 #21B231

tetradic

#3121B2 #B2215A #A2B221 #21B27A

square

#3121B2 #B2215A #A2B221 #21B27A

split-complementary

#3121B2 #B27A21 #5AB221

monochromatic

#150E4B #23177E #3121B2 #4836DA #776AE3

Accessibility & contrast

On white

10.55

#3121B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#3121B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3121B2

10.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3121B2	#FFFFFF	#000000	##FFFFFF
##3121B2	1.00	10.55	1.99	10.55
#FFFFFF	10.55	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0045B6

Deuteranopia (green-blind)

#0038B0

Tritanopia (blue-blind)

#004F6B

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #3121b2;
/* rgb */ color: rgb(49, 33, 178);
/* oklch */ color: oklch(39.0% 0.211 275.3);

Tailwind

colors: {
  custom: {
    50: '#7e61ca',
    500: '#3121b2',
    950: '#000000',
  },
}

SCSS

$custom: #3121b2;
$custom-light: #7e61ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3121b2",
  "rgb": {
    "r": 49,
    "g": 33,
    "b": 178
  },
  "hsl": {
    "h": 246.621,
    "s": 68.72,
    "l": 41.373
  },
  "oklch": {
    "l": 0.39001,
    "c": 0.21127,
    "h": 275.3
  },
  "luminance": 0.04955
}

Semantic roles & 50–950 ramp

primary

#3121B2

secondary

#BEC966

accent

#EC3CD8

background

#F8F5FC

surface

#F0EAF9

border

#CBC6D2

text

#0C0513

muted

#7D7982

Preview Lab

Preview with #3121B2

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

Preview Lab → · Contrast checker → · Palette generator →