#3F459F#3F459F

#3F459F is a dark, vivid blue. Relative luminance 0.078; OKLCH L 43.8% C 0.144 H 275.8°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#3F459F
RGB	rgb(63, 69, 159)
HSL	hsl(236, 43%, 44%)
HSV	hsv(236, 60%, 62%)
CMYK	cmyk(60.4%, 56.6%, 0%, 37.6%)
CIE-LAB	lab(33.60, 25.64, -49.85)
CIE-LCH	lch(33.60, 56.05, 297.22°)
OKLab	oklab(43.77% 0.0146 -0.143)
OKLCH	oklch(43.77% 0.144 275.8)
XYZ	xyz(10.4340, 7.8154, 33.7529)
Luminance	0.0782 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F459F #9F993F

analogous

#3F759F #3F459F #693F9F

triadic

#3F459F #9F3F45 #459F3F

tetradic

#3F459F #9F3F75 #9F993F #3F9F69

square

#3F459F #9F3F75 #9F993F #3F9F69

split-complementary

#3F459F #9F693F #759F3F

monochromatic

#1C1F47 #2E3273 #3F459F #5D63BF #888DD0

Accessibility & contrast

On white

8.19

#3F459F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#3F459F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F459F

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F459F	#FFFFFF	#000000	##FFFFFF
##3F459F	1.00	8.19	2.56	8.19
#FFFFFF	8.19	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053A2

Deuteranopia (green-blind)

#004B9D

Tritanopia (blue-blind)

#005A6B

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3f459f;
/* rgb */ color: rgb(63, 69, 159);
/* oklch */ color: oklch(43.8% 0.144 275.8);

Tailwind

colors: {
  custom: {
    50: '#7e78bc',
    500: '#3f459f',
    950: '#000000',
  },
}

SCSS

$custom: #3f459f;
$custom-light: #7e78bc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f459f",
  "rgb": {
    "r": 63,
    "g": 69,
    "b": 159
  },
  "hsl": {
    "h": 236.25,
    "s": 43.243,
    "l": 43.529
  },
  "oklch": {
    "l": 0.43767,
    "c": 0.14377,
    "h": 275.8
  },
  "luminance": 0.07816
}

Semantic roles & 50–950 ramp

primary

#3F459F

secondary

#BBB77F

accent

#CB55D3

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0912

muted

#7C7B81

Preview Lab

Preview with #3F459F

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

Preview Lab → · Contrast checker → · Palette generator →