#40557B#40557B

#40557B is a dark, moderate blue. Relative luminance 0.090; OKLCH L 44.9% C 0.068 H 261.8°. Best body text is #FFFFFF at 7.49:1 contrast (WCAG AA passes).

Color values

HEX	#40557B
RGB	rgb(64, 85, 123)
HSL	hsl(219, 32%, 37%)
HSV	hsv(219, 48%, 48%)
CMYK	cmyk(48%, 30.9%, 0%, 51.8%)
CIE-LAB	lab(36.02, 3.15, -24.02)
CIE-LCH	lch(36.02, 24.22, 277.48°)
OKLab	oklab(44.93% -0.0097 -0.0673)
OKLCH	oklch(44.93% 0.068 261.8)
XYZ	xyz(8.9368, 9.0165, 20.0045)
Luminance	0.0902 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40557B #7B6640

analogous

#40737B #40557B #49407B

triadic

#40557B #7B4055 #557B40

tetradic

#40557B #7B4073 #7B6640 #407B49

square

#40557B #7B4073 #7B6640 #407B49

split-complementary

#40557B #7B4940 #737B40

monochromatic

#161D2A #2B3953 #40557B #5571A3 #7B92BA

Accessibility & contrast

On white

7.49

#40557B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#40557B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40557B

7.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40557B	#FFFFFF	#000000	##FFFFFF
##40557B	1.00	7.49	2.80	7.49
#FFFFFF	7.49	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#47587D

Deuteranopia (green-blind)

#40527A

Tritanopia (blue-blind)

#295D62

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #40557b;
/* rgb */ color: rgb(64, 85, 123);
/* oklch */ color: oklch(44.9% 0.068 261.8);

Tailwind

colors: {
  custom: {
    50: '#7884a1',
    500: '#40557b',
    950: '#000000',
  },
}

SCSS

$custom: #40557b;
$custom-light: #7884a1;
$custom-dark: #000000;

JSON

{
  "hex": "#40557b",
  "rgb": {
    "r": 64,
    "g": 85,
    "b": 123
  },
  "hsl": {
    "h": 218.644,
    "s": 31.551,
    "l": 36.667
  },
  "oklch": {
    "l": 0.44932,
    "c": 0.06795,
    "h": 261.8
  },
  "luminance": 0.09017
}

Semantic roles & 50–950 ramp

primary

#40557B

secondary

#A59372

accent

#A360C8

background

#F7F8F9

surface

#EDEFF2

border

#C8CACC

text

#090A0F

muted

#7B7C7E

Preview Lab

Preview with #40557B

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

Preview Lab → · Contrast checker → · Palette generator →