#40639A#40639A

#40639A is a mid, moderate blue. Relative luminance 0.123; OKLCH L 49.9% C 0.097 H 259.1°. Best body text is #FFFFFF at 6.05:1 contrast (WCAG AA passes).

Color values

HEX	#40639A
RGB	rgb(64, 99, 154)
HSL	hsl(217, 41%, 43%)
HSV	hsv(217, 58%, 60%)
CMYK	cmyk(58.4%, 35.7%, 0%, 39.6%)
CIE-LAB	lab(41.76, 4.67, -33.79)
CIE-LCH	lch(41.76, 34.11, 277.87°)
OKLab	oklab(49.92% -0.0184 -0.0955)
OKLCH	oklch(49.92% 0.097 259.1)
XYZ	xyz(12.4069, 12.3457, 32.2947)
Luminance	0.1235 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40639A #9A7740

analogous

#40909A #40639A #4A409A

triadic

#40639A #9A4063 #639A40

tetradic

#40639A #9A4090 #9A7740 #409A4A

square

#40639A #9A4090 #9A7740 #409A4A

split-complementary

#40639A #9A4A40 #909A40

monochromatic

#1C2B44 #2E476F #40639A #5C81BB #87A2CD

Accessibility & contrast

On white

6.05

#40639A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#40639A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #40639A

6.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40639A	#FFFFFF	#000000	##FFFFFF
##40639A	1.00	6.05	3.47	6.05
#FFFFFF	6.05	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C679C

Deuteranopia (green-blind)

#415F99

Tritanopia (blue-blind)

#006F77

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #40639a;
/* rgb */ color: rgb(64, 99, 154);
/* oklch */ color: oklch(49.9% 0.097 259.1);

Tailwind

colors: {
  custom: {
    50: '#7c8fb8',
    500: '#40639a',
    950: '#000000',
  },
}

SCSS

$custom: #40639a;
$custom-light: #7c8fb8;
$custom-dark: #000000;

JSON

{
  "hex": "#40639a",
  "rgb": {
    "r": 64,
    "g": 99,
    "b": 154
  },
  "hsl": {
    "h": 216.667,
    "s": 41.284,
    "l": 42.745
  },
  "oklch": {
    "l": 0.49919,
    "c": 0.0973,
    "h": 259.1
  },
  "luminance": 0.12347
}

Semantic roles & 50–950 ramp

primary

#40639A

secondary

#B8A17E

accent

#A257D1

background

#F7F8FB

surface

#EEF0F6

border

#C9CBD0

text

#0A0C11

muted

#7C7D80

Preview Lab

Preview with #40639A

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

Preview Lab → · Contrast checker → · Palette generator →