#665EB3#665EB3

#665EB3 is a mid, vivid blue. Relative luminance 0.141; OKLCH L 53.0% C 0.130 H 285.3°. Best body text is #FFFFFF at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#665EB3
RGB	rgb(102, 94, 179)
HSL	hsl(246, 36%, 54%)
HSV	hsv(246, 47%, 70%)
CMYK	cmyk(43%, 47.5%, 0%, 29.8%)
CIE-LAB	lab(44.35, 24.93, -44.29)
CIE-LCH	lch(44.35, 50.82, 299.38°)
OKLab	oklab(53.02% 0.0344 -0.1254)
OKLCH	oklch(53.02% 0.13 285.3)
XYZ	xyz(17.6165, 14.0842, 44.4294)
Luminance	0.1409 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665EB3 #ABB35E

analogous

#5E80B3 #665EB3 #905EB3

triadic

#665EB3 #B3665E #5EB366

tetradic

#665EB3 #B35E80 #ABB35E #5EB390

square

#665EB3 #B35E80 #ABB35E #5EB390

split-complementary

#665EB3 #B3905E #80B35E

monochromatic

#353066 #4B4490 #665EB3 #8E88C7 #B5B1DA

Accessibility & contrast

On white

5.50

#665EB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.82

#665EB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665EB3

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665EB3	#FFFFFF	#000000	##FFFFFF
##665EB3	1.00	5.50	3.82	5.50
#FFFFFF	5.50	1.00	21.00	1.00
#000000	3.82	21.00	1.00	21.00
##FFFFFF	5.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C6BB6

Deuteranopia (green-blind)

#3A66B1

Tritanopia (blue-blind)

#4F6F80

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #665eb3;
/* rgb */ color: rgb(102, 94, 179);
/* oklch */ color: oklch(53.0% 0.130 285.3);

Tailwind

colors: {
  custom: {
    50: '#968bca',
    500: '#665eb3',
    950: '#000000',
  },
}

SCSS

$custom: #665eb3;
$custom-light: #968bca;
$custom-dark: #000000;

JSON

{
  "hex": "#665eb3",
  "rgb": {
    "r": 102,
    "g": 94,
    "b": 179
  },
  "hsl": {
    "h": 245.647,
    "s": 35.865,
    "l": 53.529
  },
  "oklch": {
    "l": 0.53019,
    "c": 0.13007,
    "h": 285.3
  },
  "luminance": 0.14085
}

Semantic roles & 50–950 ramp

primary

#665EB3

secondary

#C5C9A4

accent

#CC5CC1

background

#F9F8FC

surface

#F2F0F8

border

#CCCBD1

text

#0E0C13

muted

#7E7D82

Preview Lab

Preview with #665EB3

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

Preview Lab → · Contrast checker → · Palette generator →