#665EBB#665EBB

#665EBB is a mid, vivid blue. Relative luminance 0.144; OKLCH L 53.5% C 0.141 H 284.4°. Best body text is #FFFFFF at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#665EBB
RGB	rgb(102, 94, 187)
HSL	hsl(245, 41%, 55%)
HSV	hsv(245, 50%, 73%)
CMYK	cmyk(45.5%, 49.7%, 0%, 26.7%)
CIE-LAB	lab(44.83, 27.32, -48.20)
CIE-LCH	lch(44.83, 55.41, 299.55°)
OKLab	oklab(53.53% 0.0353 -0.1369)
OKLCH	oklch(53.53% 0.141 284.4)
XYZ	xyz(18.4492, 14.4172, 48.8148)
Luminance	0.1442 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665EBB #B3BB5E

analogous

#5E85BB #665EBB #945EBB

triadic

#665EBB #BB665E #5EBB66

tetradic

#665EBB #BB5E85 #B3BB5E #5EBB94

square

#665EBB #BB5E85 #B3BB5E #5EBB94

split-complementary

#665EBB #BB945E #85BB5E

monochromatic

#352F70 #49419B #665EBB #8F89CD #B8B4DF

Accessibility & contrast

On white

5.41

#665EBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.88

#665EBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665EBB

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665EBB	#FFFFFF	#000000	##FFFFFF
##665EBB	1.00	5.41	3.88	5.41
#FFFFFF	5.41	1.00	21.00	1.00
#000000	3.88	21.00	1.00	21.00
##FFFFFF	5.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#366DBE

Deuteranopia (green-blind)

#3267B9

Tritanopia (blue-blind)

#4A7284

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #665ebb;
/* rgb */ color: rgb(102, 94, 187);
/* oklch */ color: oklch(53.5% 0.141 284.4);

Tailwind

colors: {
  custom: {
    50: '#978bd0',
    500: '#665ebb',
    950: '#000000',
  },
}

SCSS

$custom: #665ebb;
$custom-light: #978bd0;
$custom-dark: #000000;

JSON

{
  "hex": "#665ebb",
  "rgb": {
    "r": 102,
    "g": 94,
    "b": 187
  },
  "hsl": {
    "h": 245.161,
    "s": 40.611,
    "l": 55.098
  },
  "oklch": {
    "l": 0.53527,
    "c": 0.14139,
    "h": 284.4
  },
  "luminance": 0.14418
}

Semantic roles & 50–950 ramp

primary

#665EBB

secondary

#CBCEA7

accent

#D057C6

background

#F9F8FC

surface

#F2F0F9

border

#CCCBD2

text

#0E0C14

muted

#7E7D82

Preview Lab

Preview with #665EBB

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

Preview Lab → · Contrast checker → · Palette generator →