#3F538C#3F538C

#3F538C is a mid, moderate blue. Relative luminance 0.091; OKLCH L 45.4% C 0.097 H 267.9°. Best body text is #FFFFFF at 7.43:1 contrast (WCAG AA passes).

Color values

HEX	#3F538C
RGB	rgb(63, 83, 140)
HSL	hsl(224, 38%, 40%)
HSV	hsv(224, 55%, 55%)
CMYK	cmyk(55%, 40.7%, 0%, 45.1%)
CIE-LAB	lab(36.24, 9.86, -34.08)
CIE-LCH	lch(36.24, 35.48, 286.14°)
OKLab	oklab(45.38% -0.0036 -0.0966)
OKLCH	oklch(45.38% 0.097 267.9)
XYZ	xyz(9.8752, 9.1360, 26.0489)
Luminance	0.0914 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F538C #8C783F

analogous

#3F798C #3F538C #523F8C

triadic

#3F538C #8C3F53 #538C3F

tetradic

#3F538C #8C3F79 #8C783F #3F8C52

square

#3F538C #8C3F79 #8C783F #3F8C52

split-complementary

#3F538C #8C523F #798C3F

monochromatic

#192138 #2C3A62 #3F538C #556EB3 #8092C6

Accessibility & contrast

On white

7.43

#3F538C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#3F538C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F538C

7.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F538C	#FFFFFF	#000000	##FFFFFF
##3F538C	1.00	7.43	2.83	7.43
#FFFFFF	7.43	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C598E

Deuteranopia (green-blind)

#33528B

Tritanopia (blue-blind)

#185F68

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3f538c;
/* rgb */ color: rgb(63, 83, 140);
/* oklch */ color: oklch(45.4% 0.097 267.9);

Tailwind

colors: {
  custom: {
    50: '#7a83ae',
    500: '#3f538c',
    950: '#000000',
  },
}

SCSS

$custom: #3f538c;
$custom-light: #7a83ae;
$custom-dark: #000000;

JSON

{
  "hex": "#3f538c",
  "rgb": {
    "r": 63,
    "g": 83,
    "b": 140
  },
  "hsl": {
    "h": 224.416,
    "s": 37.931,
    "l": 39.804
  },
  "oklch": {
    "l": 0.45383,
    "c": 0.09663,
    "h": 267.9
  },
  "luminance": 0.09137
}

Semantic roles & 50–950 ramp

primary

#3F538C

secondary

#B0A177

accent

#B05ACE

background

#F7F7FA

surface

#EEEEF4

border

#C9C9CE

text

#0A0A10

muted

#7C7C7F

Preview Lab

Preview with #3F538C

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

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