#40577D#40577D

#40577D is a mid, moderate blue. Relative luminance 0.094; OKLCH L 45.5% C 0.069 H 260.1°. Best body text is #FFFFFF at 7.30:1 contrast (WCAG AA passes).

Color values

HEX	#40577D
RGB	rgb(64, 87, 125)
HSL	hsl(217, 32%, 37%)
HSV	hsv(217, 49%, 49%)
CMYK	cmyk(48.8%, 30.4%, 0%, 51%)
CIE-LAB	lab(36.72, 2.53, -24.15)
CIE-LCH	lch(36.72, 24.28, 275.98°)
OKLab	oklab(45.51% -0.0117 -0.0676)
OKLCH	oklch(45.51% 0.069 260.1)
XYZ	xyz(9.2230, 9.3865, 20.7238)
Luminance	0.0939 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40577D #7D6640

analogous

#40767D #40577D #48407D

triadic

#40577D #7D4057 #577D40

tetradic

#40577D #7D4076 #7D6640 #407D48

square

#40577D #7D4076 #7D6640 #407D48

split-complementary

#40577D #7D4840 #767D40

monochromatic

#171F2C #2B3B55 #40577D #5573A5 #7C94BC

Accessibility & contrast

On white

7.30

#40577D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.88

#40577D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40577D

7.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40577D	#FFFFFF	#000000	##FFFFFF
##40577D	1.00	7.30	2.88	7.30
#FFFFFF	7.30	1.00	21.00	1.00
#000000	2.88	21.00	1.00	21.00
##FFFFFF	7.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#495A7F

Deuteranopia (green-blind)

#42547C

Tritanopia (blue-blind)

#275F64

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #40577d;
/* rgb */ color: rgb(64, 87, 125);
/* oklch */ color: oklch(45.5% 0.069 260.1);

Tailwind

colors: {
  custom: {
    50: '#7886a3',
    500: '#40577d',
    950: '#000000',
  },
}

SCSS

$custom: #40577d;
$custom-light: #7886a3;
$custom-dark: #000000;

JSON

{
  "hex": "#40577d",
  "rgb": {
    "r": 64,
    "g": 87,
    "b": 125
  },
  "hsl": {
    "h": 217.377,
    "s": 32.275,
    "l": 37.059
  },
  "oklch": {
    "l": 0.45511,
    "c": 0.06866,
    "h": 260.1
  },
  "luminance": 0.09387
}

Semantic roles & 50–950 ramp

primary

#40577D

secondary

#A69373

accent

#A15FC8

background

#F7F8FA

surface

#EDEFF3

border

#C8CACD

text

#090B0F

muted

#7B7C7F

Preview Lab

Preview with #40577D

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

Preview Lab → · Contrast checker → · Palette generator →