#40639D#40639D

#40639D is a mid, moderate blue. Relative luminance 0.124; OKLCH L 50.1% C 0.102 H 260.0°. Best body text is #FFFFFF at 6.02:1 contrast (WCAG AA passes).

Color values

HEX	#40639D
RGB	rgb(64, 99, 157)
HSL	hsl(217, 42%, 43%)
HSV	hsv(217, 59%, 62%)
CMYK	cmyk(59.2%, 36.9%, 0%, 38.4%)
CIE-LAB	lab(41.92, 5.70, -35.33)
CIE-LCH	lch(41.92, 35.79, 279.17°)
OKLab	oklab(50.09% -0.0176 -0.1)
OKLCH	oklch(50.09% 0.102 260)
XYZ	xyz(12.6599, 12.4469, 33.6271)
Luminance	0.1245 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40639D #9D7A40

analogous

#40919D #40639D #4B409D

triadic

#40639D #9D4063 #639D40

tetradic

#40639D #9D4091 #9D7A40 #409D4B

square

#40639D #9D4091 #9D7A40 #409D4B

split-complementary

#40639D #9D4B40 #919D40

monochromatic

#1D2C46 #2E4872 #40639D #5D81BD #89A3CF

Accessibility & contrast

On white

6.02

#40639D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.49

#40639D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #40639D

6.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40639D	#FFFFFF	#000000	##FFFFFF
##40639D	1.00	6.02	3.49	6.02
#FFFFFF	6.02	1.00	21.00	1.00
#000000	3.49	21.00	1.00	21.00
##FFFFFF	6.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B689F

Deuteranopia (green-blind)

#3F5F9C

Tritanopia (blue-blind)

#007078

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #40639d;
/* rgb */ color: rgb(64, 99, 157);
/* oklch */ color: oklch(50.1% 0.102 260.0);

Tailwind

colors: {
  custom: {
    50: '#7d8fba',
    500: '#40639d',
    950: '#000000',
  },
}

SCSS

$custom: #40639d;
$custom-light: #7d8fba;
$custom-dark: #000000;

JSON

{
  "hex": "#40639d",
  "rgb": {
    "r": 64,
    "g": 99,
    "b": 157
  },
  "hsl": {
    "h": 217.419,
    "s": 42.081,
    "l": 43.333
  },
  "oklch": {
    "l": 0.50093,
    "c": 0.10157,
    "h": 260
  },
  "luminance": 0.12448
}

Semantic roles & 50–950 ramp

primary

#40639D

secondary

#B9A47F

accent

#A356D2

background

#F7F8FB

surface

#EEF0F6

border

#C9CBD0

text

#0A0C11

muted

#7C7D80

Preview Lab

Preview with #40639D

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

Preview Lab → · Contrast checker → · Palette generator →