#3F489F#3F489F

#3F489F is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.4% C 0.140 H 274.7°. Best body text is #FFFFFF at 7.96:1 contrast (WCAG AA passes).

Color values

HEX	#3F489F
RGB	rgb(63, 72, 159)
HSL	hsl(234, 43%, 44%)
HSV	hsv(234, 60%, 62%)
CMYK	cmyk(60.4%, 54.7%, 0%, 37.6%)
CIE-LAB	lab(34.38, 23.68, -48.57)
CIE-LCH	lch(34.38, 54.04, 295.99°)
OKLab	oklab(44.36% 0.0115 -0.1392)
OKLCH	oklch(44.36% 0.14 274.7)
XYZ	xyz(10.6232, 8.1939, 33.8159)
Luminance	0.0819 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F489F #9F963F

analogous

#3F789F #3F489F #663F9F

triadic

#3F489F #9F3F48 #489F3F

tetradic

#3F489F #9F3F78 #9F963F #3F9F66

square

#3F489F #9F3F78 #9F963F #3F9F66

split-complementary

#3F489F #9F663F #789F3F

monochromatic

#1C2047 #2E3473 #3F489F #5D66BF #888FD0

Accessibility & contrast

On white

7.96

#3F489F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#3F489F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F489F

7.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F489F	#FFFFFF	#000000	##FFFFFF
##3F489F	1.00	7.96	2.64	7.96
#FFFFFF	7.96	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F55A2

Deuteranopia (green-blind)

#004D9D

Tritanopia (blue-blind)

#005C6C

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3f489f;
/* rgb */ color: rgb(63, 72, 159);
/* oklch */ color: oklch(44.4% 0.140 274.7);

Tailwind

colors: {
  custom: {
    50: '#7d7abc',
    500: '#3f489f',
    950: '#000000',
  },
}

SCSS

$custom: #3f489f;
$custom-light: #7d7abc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f489f",
  "rgb": {
    "r": 63,
    "g": 72,
    "b": 159
  },
  "hsl": {
    "h": 234.375,
    "s": 43.243,
    "l": 43.529
  },
  "oklch": {
    "l": 0.44357,
    "c": 0.13972,
    "h": 274.7
  },
  "luminance": 0.08195
}

Semantic roles & 50–950 ramp

primary

#3F489F

secondary

#BBB57F

accent

#C755D3

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0912

muted

#7C7B81

Preview Lab

Preview with #3F489F

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

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