#3A51C9#3A51C9

#3A51C9 is a mid, vivid blue. Relative luminance 0.110; OKLCH L 49.2% C 0.187 H 269.8°. Best body text is #FFFFFF at 6.56:1 contrast (WCAG AA passes).

Color values

HEX	#3A51C9
RGB	rgb(58, 81, 201)
HSL	hsl(230, 57%, 51%)
HSV	hsv(230, 71%, 79%)
CMYK	cmyk(71.1%, 59.7%, 0%, 21.2%)
CIE-LAB	lab(39.58, 31.98, -64.95)
CIE-LCH	lch(39.58, 72.40, 296.22°)
OKLab	oklab(49.15% -0.0007 -0.1874)
OKLCH	oklch(49.15% 0.187 269.8)
XYZ	xyz(15.2264, 10.9999, 56.5678)
Luminance	0.1100 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A51C9 #C9B23A

analogous

#3A98C9 #3A51C9 #6A3AC9

triadic

#3A51C9 #C93A51 #51C93A

tetradic

#3A51C9 #C93A98 #C9B23A #3AC96A

square

#3A51C9 #C93A98 #C9B23A #3AC96A

split-complementary

#3A51C9 #C96A3A #98C93A

monochromatic

#1D2A6B #2B3D9B #3A51C9 #6A7BD6 #9AA6E3

Accessibility & contrast

On white

6.56

#3A51C9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.20

#3A51C9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3A51C9

6.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A51C9	#FFFFFF	#000000	##FFFFFF
##3A51C9	1.00	6.56	3.20	6.56
#FFFFFF	6.56	1.00	21.00	1.00
#000000	3.20	21.00	1.00	21.00
##FFFFFF	6.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064CD

Deuteranopia (green-blind)

#0057C7

Tritanopia (blue-blind)

#006F85

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3a51c9;
/* rgb */ color: rgb(58, 81, 201);
/* oklch */ color: oklch(49.2% 0.187 269.8);

Tailwind

colors: {
  custom: {
    50: '#8381da',
    500: '#3a51c9',
    950: '#000000',
  },
}

SCSS

$custom: #3a51c9;
$custom-light: #8381da;
$custom-dark: #000000;

JSON

{
  "hex": "#3a51c9",
  "rgb": {
    "r": 58,
    "g": 81,
    "b": 201
  },
  "hsl": {
    "h": 230.35,
    "s": 56.972,
    "l": 50.784
  },
  "oklch": {
    "l": 0.49154,
    "c": 0.18742,
    "h": 269.8
  },
  "luminance": 0.11001
}

Semantic roles & 50–950 ramp

primary

#3A51C9

secondary

#CFC590

accent

#C848E0

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3A51C9

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

Preview Lab → · Contrast checker → · Palette generator →