#3F31B9#3F31B9

#3F31B9 is a dark, highly saturated blue. Relative luminance 0.068; OKLCH L 42.7% C 0.202 H 278.2°. Best body text is #FFFFFF at 8.93:1 contrast (WCAG AA passes).

Color values

HEX	#3F31B9
RGB	rgb(63, 49, 185)
HSL	hsl(246, 58%, 46%)
HSV	hsv(246, 74%, 73%)
CMYK	cmyk(65.9%, 73.5%, 0%, 27.5%)
CIE-LAB	lab(31.24, 46.52, -69.23)
CIE-LCH	lch(31.24, 83.41, 303.90°)
OKLab	oklab(42.74% 0.0286 -0.1999)
OKLCH	oklch(42.74% 0.202 278.2)
XYZ	xyz(11.9023, 6.7552, 46.5662)
Luminance	0.0676 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F31B9 #ABB931

analogous

#3167B9 #3F31B9 #8331B9

triadic

#3F31B9 #B93F31 #31B93F

tetradic

#3F31B9 #B93167 #ABB931 #31B983

square

#3F31B9 #B93167 #ABB931 #31B983

split-complementary

#3F31B9 #B98331 #67B931

monochromatic

#1E1758 #2F2489 #3F31B9 #6255D2 #8F86DF

Accessibility & contrast

On white

8.93

#3F31B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#3F31B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F31B9

8.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F31B9	#FFFFFF	#000000	##FFFFFF
##3F31B9	1.00	8.93	2.35	8.93
#FFFFFF	8.93	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FBD

Deuteranopia (green-blind)

#0044B7

Tritanopia (blue-blind)

#005772

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3f31b9;
/* rgb */ color: rgb(63, 49, 185);
/* oklch */ color: oklch(42.7% 0.202 278.2);

Tailwind

colors: {
  custom: {
    50: '#846bcf',
    500: '#3f31b9',
    950: '#000000',
  },
}

SCSS

$custom: #3f31b9;
$custom-light: #846bcf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f31b9",
  "rgb": {
    "r": 63,
    "g": 49,
    "b": 185
  },
  "hsl": {
    "h": 246.176,
    "s": 58.12,
    "l": 45.882
  },
  "oklch": {
    "l": 0.42741,
    "c": 0.20196,
    "h": 278.2
  },
  "luminance": 0.06756
}

Semantic roles & 50–950 ramp

primary

#3F31B9

secondary

#C1C87D

accent

#E146D1

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3F31B9

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

Preview Lab → · Contrast checker → · Palette generator →