#3F398D#3F398D

#3F398D is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.1% C 0.135 H 281.6°. Best body text is #FFFFFF at 9.63:1 contrast (WCAG AA passes).

Color values

HEX	#3F398D
RGB	rgb(63, 57, 141)
HSL	hsl(244, 42%, 39%)
HSV	hsv(244, 60%, 55%)
CMYK	cmyk(55.3%, 59.6%, 0%, 44.7%)
CIE-LAB	lab(29.17, 27.29, -46.03)
CIE-LCH	lch(29.17, 53.51, 300.66°)
OKLab	oklab(40.06% 0.0272 -0.1319)
OKLCH	oklch(40.06% 0.135 281.6)
XYZ	xyz(8.3193, 5.9056, 25.8957)
Luminance	0.0591 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F398D #878D39

analogous

#395D8D #3F398D #69398D

triadic

#3F398D #8D3F39 #398D3F

tetradic

#3F398D #8D395D #878D39 #398D69

square

#3F398D #8D395D #878D39 #398D69

split-complementary

#3F398D #8D6939 #5D8D39

monochromatic

#181636 #2C2761 #3F398D #544CB7 #7E78C8

Accessibility & contrast

On white

9.63

#3F398D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#3F398D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F398D

9.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F398D	#FFFFFF	#000000	##FFFFFF
##3F398D	1.00	9.63	2.18	9.63
#FFFFFF	9.63	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004890

Deuteranopia (green-blind)

#00428B

Tritanopia (blue-blind)

#1C4D5D

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #3f398d;
/* rgb */ color: rgb(63, 57, 141);
/* oklch */ color: oklch(40.1% 0.135 281.6);

Tailwind

colors: {
  custom: {
    50: '#7b6faf',
    500: '#3f398d',
    950: '#000000',
  },
}

SCSS

$custom: #3f398d;
$custom-light: #7b6faf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f398d",
  "rgb": {
    "r": 63,
    "g": 57,
    "b": 141
  },
  "hsl": {
    "h": 244.286,
    "s": 42.424,
    "l": 38.824
  },
  "oklch": {
    "l": 0.40058,
    "c": 0.13466,
    "h": 281.6
  },
  "luminance": 0.05906
}

Semantic roles & 50–950 ramp

primary

#3F398D

secondary

#ADB270

accent

#D256C9

background

#F7F6FA

surface

#EEECF4

border

#C9C7CE

text

#0A0710

muted

#7C7A7F

Preview Lab

Preview with #3F398D

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

Preview Lab → · Contrast checker → · Palette generator →