#646FB8#646FB8

#646FB8 is a mid, moderate blue. Relative luminance 0.175; OKLCH L 56.6% C 0.113 H 275.7°. Best body text is #FFFFFF at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#646FB8
RGB	rgb(100, 111, 184)
HSL	hsl(232, 37%, 56%)
HSV	hsv(232, 46%, 72%)
CMYK	cmyk(45.7%, 39.7%, 0%, 27.8%)
CIE-LAB	lab(48.93, 15.47, -39.94)
CIE-LCH	lch(48.93, 42.83, 291.17°)
OKLab	oklab(56.55% 0.0112 -0.1127)
OKLCH	oklch(56.55% 0.113 275.7)
XYZ	xyz(19.5890, 17.5379, 47.6911)
Luminance	0.1754 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FB8 #B8AD64

analogous

#6499B8 #646FB8 #8364B8

triadic

#646FB8 #B8646F #6FB864

tetradic

#646FB8 #B86499 #B8AD64 #64B883

square

#646FB8 #B86499 #B8AD64 #64B883

split-complementary

#646FB8 #B88364 #99B864

monochromatic

#333B6F #465199 #646FB8 #8E96CB #B8BDDE

Accessibility & contrast

On white

4.66

#646FB8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.51

#646FB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #646FB8

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FB8	#FFFFFF	#000000	##FFFFFF
##646FB8	1.00	4.66	4.51	4.66
#FFFFFF	4.66	1.00	21.00	1.00
#000000	4.51	21.00	1.00	21.00
##FFFFFF	4.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5478BB

Deuteranopia (green-blind)

#4D71B6

Tritanopia (blue-blind)

#467E8B

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #646fb8;
/* rgb */ color: rgb(100, 111, 184);
/* oklch */ color: oklch(56.6% 0.113 275.7);

Tailwind

colors: {
  custom: {
    50: '#9498cd',
    500: '#646fb8',
    950: '#000000',
  },
}

SCSS

$custom: #646fb8;
$custom-light: #9498cd;
$custom-dark: #000000;

JSON

{
  "hex": "#646fb8",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 184
  },
  "hsl": {
    "h": 232.143,
    "s": 37.168,
    "l": 55.686
  },
  "oklch": {
    "l": 0.56552,
    "c": 0.11326,
    "h": 275.7
  },
  "luminance": 0.17539
}

Semantic roles & 50–950 ramp

primary

#646FB8

secondary

#CDC9AA

accent

#BE5BCD

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0D0D13

muted

#7E7E82

Preview Lab

Preview with #646FB8

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

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