#3F308E#3F308E

#3F308E is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.6% C 0.148 H 284.3°. Best body text is #FFFFFF at 10.37:1 contrast (WCAG AA passes).

Color values

HEX	#3F308E
RGB	rgb(63, 48, 142)
HSL	hsl(250, 49%, 37%)
HSV	hsv(250, 66%, 56%)
CMYK	cmyk(55.6%, 66.2%, 0%, 44.3%)
CIE-LAB	lab(27.08, 33.31, -50.04)
CIE-LCH	lch(27.08, 60.12, 303.65°)
OKLab	oklab(38.55% 0.0366 -0.1437)
OKLCH	oklch(38.55% 0.148 284.3)
XYZ	xyz(7.9879, 5.1232, 26.1539)
Luminance	0.0512 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F308E #7F8E30

analogous

#30508E #3F308E #6E308E

triadic

#3F308E #8E3F30 #308E3F

tetradic

#3F308E #8E3050 #7F8E30 #308E6E

square

#3F308E #8E3050 #7F8E30 #308E6E

split-complementary

#3F308E #8E6E30 #508E30

monochromatic

#161133 #2B2160 #3F308E #533FBC #7B6BCD

Accessibility & contrast

On white

10.37

#3F308E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#3F308E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F308E

10.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F308E	#FFFFFF	#000000	##FFFFFF
##3F308E	1.00	10.37	2.02	10.37
#FFFFFF	10.37	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004391

Deuteranopia (green-blind)

#003D8C

Tritanopia (blue-blind)

#1C475A

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #3f308e;
/* rgb */ color: rgb(63, 48, 142);
/* oklch */ color: oklch(38.6% 0.148 284.3);

Tailwind

colors: {
  custom: {
    50: '#7c69b0',
    500: '#3f308e',
    950: '#000000',
  },
}

SCSS

$custom: #3f308e;
$custom-light: #7c69b0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f308e",
  "rgb": {
    "r": 63,
    "g": 48,
    "b": 142
  },
  "hsl": {
    "h": 249.574,
    "s": 49.474,
    "l": 37.255
  },
  "oklch": {
    "l": 0.38553,
    "c": 0.14832,
    "h": 284.3
  },
  "luminance": 0.05124
}

Semantic roles & 50–950 ramp

primary

#3F308E

secondary

#A8B465

accent

#D94FC3

background

#F7F6FA

surface

#EEEBF5

border

#C9C6CF

text

#0A0611

muted

#7C7A80

Preview Lab

Preview with #3F308E

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

Preview Lab → · Contrast checker → · Palette generator →