#3F538D#3F538D

#3F538D is a mid, moderate blue. Relative luminance 0.092; OKLCH L 45.4% C 0.098 H 268.0°. Best body text is #FFFFFF at 7.41:1 contrast (WCAG AA passes).

Color values

HEX	#3F538D
RGB	rgb(63, 83, 141)
HSL	hsl(225, 38%, 40%)
HSV	hsv(225, 55%, 55%)
CMYK	cmyk(55.3%, 41.1%, 0%, 44.7%)
CIE-LAB	lab(36.30, 10.21, -34.60)
CIE-LCH	lch(36.30, 36.07, 286.44°)
OKLab	oklab(45.45% -0.0034 -0.0981)
OKLCH	oklch(45.45% 0.098 268)
XYZ	xyz(9.9493, 9.1656, 26.4390)
Luminance	0.0917 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F538D #8D793F

analogous

#3F7A8D #3F538D #523F8D

triadic

#3F538D #8D3F53 #538D3F

tetradic

#3F538D #8D3F7A #8D793F #3F8D52

square

#3F538D #8D3F7A #8D793F #3F8D52

split-complementary

#3F538D #8D523F #7A8D3F

monochromatic

#192138 #2C3A63 #3F538D #566EB3 #8092C6

Accessibility & contrast

On white

7.41

#3F538D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#3F538D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F538D

7.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F538D	#FFFFFF	#000000	##FFFFFF
##3F538D	1.00	7.41	2.83	7.41
#FFFFFF	7.41	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B598F

Deuteranopia (green-blind)

#32528C

Tritanopia (blue-blind)

#166069

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3f538d;
/* rgb */ color: rgb(63, 83, 141);
/* oklch */ color: oklch(45.4% 0.098 268.0);

Tailwind

colors: {
  custom: {
    50: '#7a83ae',
    500: '#3f538d',
    950: '#000000',
  },
}

SCSS

$custom: #3f538d;
$custom-light: #7a83ae;
$custom-dark: #000000;

JSON

{
  "hex": "#3f538d",
  "rgb": {
    "r": 63,
    "g": 83,
    "b": 141
  },
  "hsl": {
    "h": 224.615,
    "s": 38.235,
    "l": 40
  },
  "oklch": {
    "l": 0.45445,
    "c": 0.09814,
    "h": 268
  },
  "luminance": 0.09166
}

Semantic roles & 50–950 ramp

primary

#3F538D

secondary

#B1A277

accent

#B05ACE

background

#F7F7FA

surface

#EEEEF4

border

#C9C9CE

text

#0A0A10

muted

#7C7C7F

Preview Lab

Preview with #3F538D

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

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