#3F557E#3F557E

#3F557E is a mid, moderate blue. Relative luminance 0.091; OKLCH L 45.0% C 0.073 H 262.3°. Best body text is #FFFFFF at 7.47:1 contrast (WCAG AA passes).

Color values

HEX	#3F557E
RGB	rgb(63, 85, 126)
HSL	hsl(219, 33%, 37%)
HSV	hsv(219, 50%, 49%)
CMYK	cmyk(50%, 32.5%, 0%, 50.6%)
CIE-LAB	lab(36.10, 3.87, -25.74)
CIE-LCH	lch(36.10, 26.03, 278.54°)
OKLab	oklab(45.03% -0.0098 -0.0723)
OKLCH	oklch(45.03% 0.073 262.3)
XYZ	xyz(9.0631, 9.0595, 21.0057)
Luminance	0.0906 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F557E #7E683F

analogous

#3F747E #3F557E #493F7E

triadic

#3F557E #7E3F55 #557E3F

tetradic

#3F557E #7E3F74 #7E683F #3F7E49

square

#3F557E #7E3F74 #7E683F #3F7E49

split-complementary

#3F557E #7E493F #747E3F

monochromatic

#161E2C #2B3955 #3F557E #5371A7 #7B92BD

Accessibility & contrast

On white

7.47

#3F557E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#3F557E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F557E

7.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F557E	#FFFFFF	#000000	##FFFFFF
##3F557E	1.00	7.47	2.81	7.47
#FFFFFF	7.47	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#465880

Deuteranopia (green-blind)

#3E527D

Tritanopia (blue-blind)

#255E64

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3f557e;
/* rgb */ color: rgb(63, 85, 126);
/* oklch */ color: oklch(45.0% 0.073 262.3);

Tailwind

colors: {
  custom: {
    50: '#7884a3',
    500: '#3f557e',
    950: '#000000',
  },
}

SCSS

$custom: #3f557e;
$custom-light: #7884a3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f557e",
  "rgb": {
    "r": 63,
    "g": 85,
    "b": 126
  },
  "hsl": {
    "h": 219.048,
    "s": 33.333,
    "l": 37.059
  },
  "oklch": {
    "l": 0.45028,
    "c": 0.07293,
    "h": 262.3
  },
  "luminance": 0.0906
}

Semantic roles & 50–950 ramp

primary

#3F557E

secondary

#A79472

accent

#A45EC9

background

#F7F8FA

surface

#EDEFF4

border

#C8CACE

text

#090A0F

muted

#7B7C7F

Preview Lab

Preview with #3F557E

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

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