#3F459A#3F459A

#3F459A is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.4% C 0.137 H 276.1°. Best body text is #FFFFFF at 8.30:1 contrast (WCAG AA passes).

Color values

HEX	#3F459A
RGB	rgb(63, 69, 154)
HSL	hsl(236, 42%, 43%)
HSV	hsv(236, 59%, 60%)
CMYK	cmyk(59.1%, 55.2%, 0%, 39.6%)
CIE-LAB	lab(33.23, 23.90, -47.41)
CIE-LCH	lch(33.23, 53.09, 296.75°)
OKLab	oklab(43.38% 0.0144 -0.1358)
OKLCH	oklch(43.38% 0.137 276.1)
XYZ	xyz(10.0089, 7.6454, 31.5139)
Luminance	0.0765 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F459A #9A943F

analogous

#3F729A #3F459A #673F9A

triadic

#3F459A #9A3F45 #459A3F

tetradic

#3F459A #9A3F72 #9A943F #3F9A67

square

#3F459A #9A3F72 #9A943F #3F9A67

split-complementary

#3F459A #9A673F #729A3F

monochromatic

#1B1E43 #2D326F #3F459A #5A61BC #868BCD

Accessibility & contrast

On white

8.30

#3F459A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#3F459A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F459A

8.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F459A	#FFFFFF	#000000	##FFFFFF
##3F459A	1.00	8.30	2.53	8.30
#FFFFFF	8.30	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D529D

Deuteranopia (green-blind)

#004A98

Tritanopia (blue-blind)

#005968

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3f459a;
/* rgb */ color: rgb(63, 69, 154);
/* oklch */ color: oklch(43.4% 0.137 276.1);

Tailwind

colors: {
  custom: {
    50: '#7d78b8',
    500: '#3f459a',
    950: '#000000',
  },
}

SCSS

$custom: #3f459a;
$custom-light: #7d78b8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f459a",
  "rgb": {
    "r": 63,
    "g": 69,
    "b": 154
  },
  "hsl": {
    "h": 236.044,
    "s": 41.935,
    "l": 42.549
  },
  "oklch": {
    "l": 0.43382,
    "c": 0.13662,
    "h": 276.1
  },
  "luminance": 0.07646
}

Semantic roles & 50–950 ramp

primary

#3F459A

secondary

#B8B47D

accent

#CA56D2

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0A0911

muted

#7C7B80

Preview Lab

Preview with #3F459A

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

Preview Lab → · Contrast checker → · Palette generator →