#40599B#40599B

#40599B is a mid, moderate blue. Relative luminance 0.106; OKLCH L 47.7% C 0.111 H 266.6°. Best body text is #FFFFFF at 6.73:1 contrast (WCAG AA passes).

Color values

HEX	#40599B
RGB	rgb(64, 89, 155)
HSL	hsl(224, 42%, 43%)
HSV	hsv(224, 59%, 61%)
CMYK	cmyk(58.7%, 42.6%, 0%, 39.2%)
CIE-LAB	lab(38.90, 11.39, -38.92)
CIE-LCH	lch(38.90, 40.55, 286.31°)
OKLab	oklab(47.72% -0.0065 -0.1107)
OKLCH	oklch(47.72% 0.111 266.6)
XYZ	xyz(11.6011, 10.6004, 32.4387)
Luminance	0.1060 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40599B #9B8240

analogous

#40879B #40599B #54409B

triadic

#40599B #9B4059 #599B40

tetradic

#40599B #9B4087 #9B8240 #409B54

square

#40599B #9B4087 #9B8240 #409B54

split-complementary

#40599B #9B5440 #879B40

monochromatic

#1C2744 #2E4070 #40599B #5C77BC #889BCE

Accessibility & contrast

On white

6.73

#40599B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#40599B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #40599B

6.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40599B	#FFFFFF	#000000	##FFFFFF
##40599B	1.00	6.73	3.12	6.73
#FFFFFF	6.73	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C609E

Deuteranopia (green-blind)

#30589A

Tritanopia (blue-blind)

#006872

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #40599b;
/* rgb */ color: rgb(64, 89, 155);
/* oklch */ color: oklch(47.7% 0.111 266.6);

Tailwind

colors: {
  custom: {
    50: '#7c87b9',
    500: '#40599b',
    950: '#000000',
  },
}

SCSS

$custom: #40599b;
$custom-light: #7c87b9;
$custom-dark: #000000;

JSON

{
  "hex": "#40599b",
  "rgb": {
    "r": 64,
    "g": 89,
    "b": 155
  },
  "hsl": {
    "h": 223.516,
    "s": 41.553,
    "l": 42.941
  },
  "oklch": {
    "l": 0.47722,
    "c": 0.11085,
    "h": 266.6
  },
  "luminance": 0.10601
}

Semantic roles & 50–950 ramp

primary

#40599B

secondary

#B8A87E

accent

#B056D1

background

#F7F8FB

surface

#EEEFF6

border

#C9CAD0

text

#0A0B11

muted

#7C7C80

Preview Lab

Preview with #40599B

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

Preview Lab → · Contrast checker → · Palette generator →