#3F458C#3F458C

#3F458C is a dark, moderate blue. Relative luminance 0.072; OKLCH L 42.4% C 0.116 H 276.6°. Best body text is #FFFFFF at 8.60:1 contrast (WCAG AA passes).

Color values

HEX	#3F458C
RGB	rgb(63, 69, 140)
HSL	hsl(235, 38%, 40%)
HSV	hsv(235, 55%, 55%)
CMYK	cmyk(55%, 50.7%, 0%, 45.1%)
CIE-LAB	lab(32.27, 19.07, -40.42)
CIE-LCH	lch(32.27, 44.69, 295.26°)
OKLab	oklab(42.35% 0.0134 -0.1153)
OKLCH	oklch(42.35% 0.116 276.6)
XYZ	xyz(8.9101, 7.2059, 25.7272)
Luminance	0.0721 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F458C #8C863F

analogous

#3F6B8C #3F458C #603F8C

triadic

#3F458C #8C3F45 #458C3F

tetradic

#3F458C #8C3F6B #8C863F #3F8C60

square

#3F458C #8C3F6B #8C863F #3F8C60

split-complementary

#3F458C #8C603F #6B8C3F

monochromatic

#191B38 #2C3062 #3F458C #555DB3 #8085C6

Accessibility & contrast

On white

8.60

#3F458C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#3F458C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F458C

8.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F458C	#FFFFFF	#000000	##FFFFFF
##3F458C	1.00	8.60	2.44	8.60
#FFFFFF	8.60	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#234F8F

Deuteranopia (green-blind)

#19498A

Tritanopia (blue-blind)

#1B5562

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3f458c;
/* rgb */ color: rgb(63, 69, 140);
/* oklch */ color: oklch(42.4% 0.116 276.6);

Tailwind

colors: {
  custom: {
    50: '#7a78ae',
    500: '#3f458c',
    950: '#000000',
  },
}

SCSS

$custom: #3f458c;
$custom-light: #7a78ae;
$custom-dark: #000000;

JSON

{
  "hex": "#3f458c",
  "rgb": {
    "r": 63,
    "g": 69,
    "b": 140
  },
  "hsl": {
    "h": 235.325,
    "s": 37.931,
    "l": 39.804
  },
  "oklch": {
    "l": 0.42351,
    "c": 0.11606,
    "h": 276.6
  },
  "luminance": 0.07206
}

Semantic roles & 50–950 ramp

primary

#3F458C

secondary

#B0AC77

accent

#C55ACE

background

#F7F7FA

surface

#EEEDF4

border

#C9C8CE

text

#0A0910

muted

#7C7B7F

Preview Lab

Preview with #3F458C

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

Preview Lab → · Contrast checker → · Palette generator →