#40398E#40398E

#40398E is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.2% C 0.136 H 282.1°. Best body text is #FFFFFF at 9.57:1 contrast (WCAG AA passes).

Color values

HEX	#40398E
RGB	rgb(64, 57, 142)
HSL	hsl(245, 43%, 39%)
HSV	hsv(245, 60%, 56%)
CMYK	cmyk(54.9%, 59.9%, 0%, 44.3%)
CIE-LAB	lab(29.33, 27.83, -46.38)
CIE-LCH	lch(29.33, 54.09, 300.96°)
OKLab	oklab(40.22% 0.0285 -0.1329)
OKLCH	oklch(40.22% 0.136 282.1)
XYZ	xyz(8.4585, 5.9687, 26.2923)
Luminance	0.0597 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40398E #878E39

analogous

#395D8E #40398E #6B398E

triadic

#40398E #8E4039 #398E40

tetradic

#40398E #8E395D #878E39 #398E6B

square

#40398E #8E395D #878E39 #398E6B

split-complementary

#40398E #8E6B39 #5D8E39

monochromatic

#191637 #2C2762 #40398E #564DB7 #7F78C9

Accessibility & contrast

On white

9.57

#40398E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#40398E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40398E

9.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40398E	#FFFFFF	#000000	##FFFFFF
##40398E	1.00	9.57	2.19	9.57
#FFFFFF	9.57	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004891

Deuteranopia (green-blind)

#00428C

Tritanopia (blue-blind)

#1E4D5E

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #40398e;
/* rgb */ color: rgb(64, 57, 142);
/* oklch */ color: oklch(40.2% 0.136 282.1);

Tailwind

colors: {
  custom: {
    50: '#7c6fb0',
    500: '#40398e',
    950: '#000000',
  },
}

SCSS

$custom: #40398e;
$custom-light: #7c6fb0;
$custom-dark: #000000;

JSON

{
  "hex": "#40398e",
  "rgb": {
    "r": 64,
    "g": 57,
    "b": 142
  },
  "hsl": {
    "h": 244.941,
    "s": 42.714,
    "l": 39.02
  },
  "oklch": {
    "l": 0.40222,
    "c": 0.13591,
    "h": 282.1
  },
  "luminance": 0.05969
}

Semantic roles & 50–950 ramp

primary

#40398E

secondary

#ADB271

accent

#D255C8

background

#F7F6FA

surface

#EEECF5

border

#C9C7CF

text

#0A0710

muted

#7C7A7F

Preview Lab

Preview with #40398E

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

Preview Lab → · Contrast checker → · Palette generator →