#665EBC#665EBC

#665EBC is a mid, vivid blue. Relative luminance 0.145; OKLCH L 53.6% C 0.143 H 284.3°. Best body text is #FFFFFF at 5.40:1 contrast (WCAG AA passes).

Color values

HEX	#665EBC
RGB	rgb(102, 94, 188)
HSL	hsl(245, 41%, 55%)
HSV	hsv(245, 50%, 74%)
CMYK	cmyk(45.7%, 50%, 0%, 26.3%)
CIE-LAB	lab(44.89, 27.62, -48.68)
CIE-LCH	lch(44.89, 55.98, 299.57°)
OKLab	oklab(53.59% 0.0354 -0.1383)
OKLCH	oklch(53.59% 0.143 284.3)
XYZ	xyz(18.5566, 14.4602, 49.3805)
Luminance	0.1446 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665EBC #B4BC5E

analogous

#5E85BC #665EBC #955EBC

triadic

#665EBC #BC665E #5EBC66

tetradic

#665EBC #BC5E85 #B4BC5E #5EBC95

square

#665EBC #BC5E85 #B4BC5E #5EBC95

split-complementary

#665EBC #BC955E #85BC5E

monochromatic

#342F71 #49419C #665EBC #8F89CE #B8B4E0

Accessibility & contrast

On white

5.40

#665EBC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.89

#665EBC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665EBC

5.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665EBC	#FFFFFF	#000000	##FFFFFF
##665EBC	1.00	5.40	3.89	5.40
#FFFFFF	5.40	1.00	21.00	1.00
#000000	3.89	21.00	1.00	21.00
##FFFFFF	5.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#356DBF

Deuteranopia (green-blind)

#3167BA

Tritanopia (blue-blind)

#4A7284

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #665ebc;
/* rgb */ color: rgb(102, 94, 188);
/* oklch */ color: oklch(53.6% 0.143 284.3);

Tailwind

colors: {
  custom: {
    50: '#978bd1',
    500: '#665ebc',
    950: '#000000',
  },
}

SCSS

$custom: #665ebc;
$custom-light: #978bd1;
$custom-dark: #000000;

JSON

{
  "hex": "#665ebc",
  "rgb": {
    "r": 102,
    "g": 94,
    "b": 188
  },
  "hsl": {
    "h": 245.106,
    "s": 41.228,
    "l": 55.294
  },
  "oklch": {
    "l": 0.53592,
    "c": 0.1428,
    "h": 284.3
  },
  "luminance": 0.14461
}

Semantic roles & 50–950 ramp

primary

#665EBC

secondary

#CBCFA7

accent

#D157C7

background

#F9F8FC

surface

#F2F0F9

border

#CCCBD2

text

#0E0C14

muted

#7E7D82

Preview Lab

Preview with #665EBC

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

Preview Lab → · Contrast checker → · Palette generator →