#403D71#403D71

#403D71 is a dark, moderate blue. Relative luminance 0.056; OKLCH L 38.9% C 0.087 H 284.2°. Best body text is #FFFFFF at 9.89:1 contrast (WCAG AA passes).

Color values

HEX	#403D71
RGB	rgb(64, 61, 113)
HSL	hsl(243, 30%, 34%)
HSV	hsv(243, 46%, 44%)
CMYK	cmyk(43.4%, 46%, 0%, 55.7%)
CIE-LAB	lab(28.43, 15.67, -29.69)
CIE-LCH	lch(28.43, 33.58, 297.83°)
OKLab	oklab(38.92% 0.0213 -0.0839)
OKLCH	oklch(38.92% 0.087 284.2)
XYZ	xyz(6.7629, 5.6195, 16.3479)
Luminance	0.0562 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403D71 #6E713D

analogous

#3D5471 #403D71 #5A3D71

triadic

#403D71 #71403D #3D7140

tetradic

#403D71 #713D54 #6E713D #3D715A

square

#403D71 #713D54 #6E713D #3D715A

split-complementary

#403D71 #715A3D #54713D

monochromatic

#131222 #292849 #403D71 #575299 #7874B4

Accessibility & contrast

On white

9.89

#403D71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#403D71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403D71

9.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403D71	#FFFFFF	#000000	##FFFFFF
##403D71	1.00	9.89	2.12	9.89
#FFFFFF	9.89	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A4573

Deuteranopia (green-blind)

#284170

Tritanopia (blue-blind)

#314751

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #403d71;
/* rgb */ color: rgb(64, 61, 113);
/* oklch */ color: oklch(38.9% 0.087 284.2);

Tailwind

colors: {
  custom: {
    50: '#78729a',
    500: '#403d71',
    950: '#000000',
  },
}

SCSS

$custom: #403d71;
$custom-light: #78729a;
$custom-dark: #000000;

JSON

{
  "hex": "#403d71",
  "rgb": {
    "r": 64,
    "g": 61,
    "b": 113
  },
  "hsl": {
    "h": 243.462,
    "s": 29.885,
    "l": 34.118
  },
  "oklch": {
    "l": 0.38917,
    "c": 0.08652,
    "h": 284.2
  },
  "luminance": 0.0562
}

Semantic roles & 50–950 ramp

primary

#403D71

secondary

#9B9E6B

accent

#C662C0

background

#F7F6F9

surface

#EDECF2

border

#C8C7CC

text

#09080E

muted

#7B7B7E

Preview Lab

Preview with #403D71

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

Preview Lab → · Contrast checker → · Palette generator →