#3F598B#3F598B

#3F598B is a mid, moderate blue. Relative luminance 0.101; OKLCH L 46.7% C 0.088 H 262.6°. Best body text is #FFFFFF at 6.97:1 contrast (WCAG AA passes).

Color values

HEX	#3F598B
RGB	rgb(63, 89, 139)
HSL	hsl(219, 38%, 40%)
HSV	hsv(219, 55%, 55%)
CMYK	cmyk(54.7%, 36%, 0%, 45.5%)
CIE-LAB	lab(37.96, 5.65, -30.76)
CIE-LCH	lch(37.96, 31.28, 280.41°)
OKLab	oklab(46.69% -0.0113 -0.0868)
OKLCH	oklch(46.69% 0.088 262.6)
XYZ	xyz(10.2809, 10.0648, 25.8220)
Luminance	0.1007 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F598B #8B713F

analogous

#3F7F8B #3F598B #4B3F8B

triadic

#3F598B #8B3F59 #598B3F

tetradic

#3F598B #8B3F7F #8B713F #3F8B4B

square

#3F598B #8B3F7F #8B713F #3F8B4B

split-complementary

#3F598B #8B4B3F #7F8B3F

monochromatic

#192337 #2C3E61 #3F598B #5575B2 #7F97C5

Accessibility & contrast

On white

6.97

#3F598B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#3F598B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F598B

6.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F598B	#FFFFFF	#000000	##FFFFFF
##3F598B	1.00	6.97	3.01	6.97
#FFFFFF	6.97	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#455D8D

Deuteranopia (green-blind)

#3C568A

Tritanopia (blue-blind)

#17646B

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3f598b;
/* rgb */ color: rgb(63, 89, 139);
/* oklch */ color: oklch(46.7% 0.088 262.6);

Tailwind

colors: {
  custom: {
    50: '#7987ad',
    500: '#3f598b',
    950: '#000000',
  },
}

SCSS

$custom: #3f598b;
$custom-light: #7987ad;
$custom-dark: #000000;

JSON

{
  "hex": "#3f598b",
  "rgb": {
    "r": 63,
    "g": 89,
    "b": 139
  },
  "hsl": {
    "h": 219.474,
    "s": 37.624,
    "l": 39.608
  },
  "oklch": {
    "l": 0.46692,
    "c": 0.08756,
    "h": 262.6
  },
  "luminance": 0.10066
}

Semantic roles & 50–950 ramp

primary

#3F598B

secondary

#AF9C76

accent

#A65ACE

background

#F7F8FA

surface

#EEEFF4

border

#C9CACE

text

#090B10

muted

#7B7C7F

Preview Lab

Preview with #3F598B

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

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