#40577C#40577C

#40577C is a mid, moderate blue. Relative luminance 0.094; OKLCH L 45.5% C 0.067 H 259.7°. Best body text is #FFFFFF at 7.31:1 contrast (WCAG AA passes).

Color values

HEX	#40577C
RGB	rgb(64, 87, 124)
HSL	hsl(217, 32%, 37%)
HSV	hsv(217, 48%, 49%)
CMYK	cmyk(48.4%, 29.8%, 0%, 51.4%)
CIE-LAB	lab(36.67, 2.21, -23.61)
CIE-LCH	lch(36.67, 23.71, 275.34°)
OKLab	oklab(45.46% -0.0121 -0.0661)
OKLCH	oklch(45.46% 0.067 259.7)
XYZ	xyz(9.1594, 9.3610, 20.3891)
Luminance	0.0936 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40577C #7C6540

analogous

#40757C #40577C #47407C

triadic

#40577C #7C4057 #577C40

tetradic

#40577C #7C4075 #7C6540 #407C47

square

#40577C #7C4075 #7C6540 #407C47

split-complementary

#40577C #7C4740 #757C40

monochromatic

#161E2B #2B3B54 #40577C #5573A4 #7B94BB

Accessibility & contrast

On white

7.31

#40577C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#40577C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40577C

7.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40577C	#FFFFFF	#000000	##FFFFFF
##40577C	1.00	7.31	2.87	7.31
#FFFFFF	7.31	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#49597E

Deuteranopia (green-blind)

#42547B

Tritanopia (blue-blind)

#285F64

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #40577c;
/* rgb */ color: rgb(64, 87, 124);
/* oklch */ color: oklch(45.5% 0.067 259.7);

Tailwind

colors: {
  custom: {
    50: '#7886a2',
    500: '#40577c',
    950: '#000000',
  },
}

SCSS

$custom: #40577c;
$custom-light: #7886a2;
$custom-dark: #000000;

JSON

{
  "hex": "#40577c",
  "rgb": {
    "r": 64,
    "g": 87,
    "b": 124
  },
  "hsl": {
    "h": 217,
    "s": 31.915,
    "l": 36.863
  },
  "oklch": {
    "l": 0.45459,
    "c": 0.06718,
    "h": 259.7
  },
  "luminance": 0.09362
}

Semantic roles & 50–950 ramp

primary

#40577C

secondary

#A69272

accent

#A060C8

background

#F7F8F9

surface

#EDEFF2

border

#C8CACC

text

#090B0F

muted

#7B7C7E

Preview Lab

Preview with #40577C

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

Preview Lab → · Contrast checker → · Palette generator →