#646FB7#646FB7

#646FB7 is a mid, moderate blue. Relative luminance 0.175; OKLCH L 56.5% C 0.112 H 275.6°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#646FB7
RGB	rgb(100, 111, 183)
HSL	hsl(232, 37%, 55%)
HSV	hsv(232, 45%, 72%)
CMYK	cmyk(45.4%, 39.3%, 0%, 28.2%)
CIE-LAB	lab(48.88, 15.17, -39.44)
CIE-LCH	lch(48.88, 42.26, 291.03°)
OKLab	oklab(56.5% 0.011 -0.1112)
OKLCH	oklch(56.5% 0.112 275.6)
XYZ	xyz(19.4846, 17.4961, 47.1410)
Luminance	0.1750 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FB7 #B7AC64

analogous

#6498B7 #646FB7 #8264B7

triadic

#646FB7 #B7646F #6FB764

tetradic

#646FB7 #B76498 #B7AC64 #64B782

square

#646FB7 #B76498 #B7AC64 #64B782

split-complementary

#646FB7 #B78264 #98B764

monochromatic

#333B6E #465197 #646FB7 #8E96CA #B8BDDE

Accessibility & contrast

On white

4.67

#646FB7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#646FB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #646FB7

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FB7	#FFFFFF	#000000	##FFFFFF
##646FB7	1.00	4.67	4.50	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5478BA

Deuteranopia (green-blind)

#4E71B5

Tritanopia (blue-blind)

#477E8A

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #646fb7;
/* rgb */ color: rgb(100, 111, 183);
/* oklch */ color: oklch(56.5% 0.112 275.6);

Tailwind

colors: {
  custom: {
    50: '#9498cd',
    500: '#646fb7',
    950: '#000000',
  },
}

SCSS

$custom: #646fb7;
$custom-light: #9498cd;
$custom-dark: #000000;

JSON

{
  "hex": "#646fb7",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 183
  },
  "hsl": {
    "h": 232.048,
    "s": 36.564,
    "l": 55.49
  },
  "oklch": {
    "l": 0.56495,
    "c": 0.11178,
    "h": 275.6
  },
  "luminance": 0.17497
}

Semantic roles & 50–950 ramp

primary

#646FB7

secondary

#CDC8AA

accent

#BE5BCD

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0D0D13

muted

#7E7E82

Preview Lab

Preview with #646FB7

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

Preview Lab → · Contrast checker → · Palette generator →