#40587B#40587B

#40587B is a mid, moderate blue. Relative luminance 0.095; OKLCH L 45.6% C 0.065 H 257.7°. Best body text is #FFFFFF at 7.24:1 contrast (WCAG AA passes).

Color values

HEX	#40587B
RGB	rgb(64, 88, 123)
HSL	hsl(216, 32%, 37%)
HSV	hsv(216, 48%, 48%)
CMYK	cmyk(48%, 28.5%, 0%, 51.8%)
CIE-LAB	lab(36.93, 1.25, -22.60)
CIE-LCH	lch(36.93, 22.63, 273.17°)
OKLab	oklab(45.64% -0.0137 -0.0632)
OKLCH	oklch(45.64% 0.065 257.7)
XYZ	xyz(9.1780, 9.4989, 20.0849)
Luminance	0.0950 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40587B #7B6340

analogous

#40767B #40587B #46407B

triadic

#40587B #7B4058 #587B40

tetradic

#40587B #7B4076 #7B6340 #407B46

square

#40587B #7B4076 #7B6340 #407B46

split-complementary

#40587B #7B4640 #767B40

monochromatic

#161E2A #2B3B53 #40587B #5575A3 #7B95BA

Accessibility & contrast

On white

7.24

#40587B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#40587B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40587B

7.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40587B	#FFFFFF	#000000	##FFFFFF
##40587B	1.00	7.24	2.90	7.24
#FFFFFF	7.24	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B5A7D

Deuteranopia (green-blind)

#44547A

Tritanopia (blue-blind)

#286064

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #40587b;
/* rgb */ color: rgb(64, 88, 123);
/* oklch */ color: oklch(45.6% 0.065 257.7);

Tailwind

colors: {
  custom: {
    50: '#7887a1',
    500: '#40587b',
    950: '#000000',
  },
}

SCSS

$custom: #40587b;
$custom-light: #7887a1;
$custom-dark: #000000;

JSON

{
  "hex": "#40587b",
  "rgb": {
    "r": 64,
    "g": 88,
    "b": 123
  },
  "hsl": {
    "h": 215.593,
    "s": 31.551,
    "l": 36.667
  },
  "oklch": {
    "l": 0.45644,
    "c": 0.06464,
    "h": 257.7
  },
  "luminance": 0.09499
}

Semantic roles & 50–950 ramp

primary

#40587B

secondary

#A59072

accent

#9E60C8

background

#F7F8F9

surface

#EDEFF2

border

#C8CACC

text

#090B0F

muted

#7B7C7E

Preview Lab

Preview with #40587B

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

Preview Lab → · Contrast checker → · Palette generator →