#403C63#403C63

#403C63 is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.8% C 0.066 H 287.5°. Best body text is #FFFFFF at 10.27:1 contrast (WCAG AA passes).

Color values

HEX	#403C63
RGB	rgb(64, 60, 99)
HSL	hsl(246, 25%, 31%)
HSV	hsv(246, 39%, 39%)
CMYK	cmyk(35.4%, 39.4%, 0%, 61.2%)
CIE-LAB	lab(27.36, 11.99, -22.43)
CIE-LCH	lch(27.36, 25.44, 298.13°)
OKLab	oklab(37.84% 0.0198 -0.0627)
OKLCH	oklch(37.84% 0.066 287.5)
XYZ	xyz(5.9817, 5.2224, 12.4948)
Luminance	0.0522 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403C63 #5F633C

analogous

#3C4B63 #403C63 #533C63

triadic

#403C63 #63403C #3C6340

tetradic

#403C63 #633C4B #5F633C #3C6353

square

#403C63 #633C4B #5F633C #3C6353

split-complementary

#403C63 #63533C #4B633C

monochromatic

#0F0E17 #27253D #403C63 #595389 #7671A9

Accessibility & contrast

On white

10.27

#403C63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#403C63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403C63

10.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403C63	#FFFFFF	#000000	##FFFFFF
##403C63	1.00	10.27	2.04	10.27
#FFFFFF	10.27	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#304265

Deuteranopia (green-blind)

#304062

Tritanopia (blue-blind)

#37434A

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #403c63;
/* rgb */ color: rgb(64, 60, 99);
/* oklch */ color: oklch(37.8% 0.066 287.5);

Tailwind

colors: {
  custom: {
    50: '#76718f',
    500: '#403c63',
    950: '#000000',
  },
}

SCSS

$custom: #403c63;
$custom-light: #76718f;
$custom-dark: #000000;

JSON

{
  "hex": "#403c63",
  "rgb": {
    "r": 64,
    "g": 60,
    "b": 99
  },
  "hsl": {
    "h": 246.154,
    "s": 24.528,
    "l": 31.176
  },
  "oklch": {
    "l": 0.37843,
    "c": 0.06577,
    "h": 287.5
  },
  "luminance": 0.05223
}

Semantic roles & 50–950 ramp

primary

#403C63

secondary

#8F9368

accent

#C167B8

background

#F7F6F8

surface

#EDECF0

border

#C8C7CB

text

#08070C

muted

#7B7A7D

Preview Lab

Preview with #403C63

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

Preview Lab → · Contrast checker → · Palette generator →