#647CB7#647CB7

#647CB7 is a mid, moderate blue. Relative luminance 0.205; OKLCH L 59.2% C 0.095 H 266.6°. Best body text is #000000 at 5.11:1 contrast (WCAG AA passes).

Color values

HEX	#647CB7
RGB	rgb(100, 124, 183)
HSL	hsl(223, 37%, 55%)
HSV	hsv(223, 45%, 72%)
CMYK	cmyk(45.4%, 32.2%, 0%, 28.2%)
CIE-LAB	lab(52.44, 7.29, -33.83)
CIE-LCH	lch(52.44, 34.61, 282.15°)
OKLab	oklab(59.25% -0.0056 -0.0949)
OKLCH	oklch(59.25% 0.095 266.6)
XYZ	xyz(21.0077, 20.5423, 47.6487)
Luminance	0.2054 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647CB7 #B79F64

analogous

#64A5B7 #647CB7 #7564B7

triadic

#647CB7 #B7647C #7CB764

tetradic

#647CB7 #B764A5 #B79F64 #64B775

square

#647CB7 #B764A5 #B79F64 #64B775

split-complementary

#647CB7 #B77564 #A5B764

monochromatic

#33446E #465E97 #647CB7 #8E9FCA #B8C3DE

Accessibility & contrast

On white

4.11

#647CB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.11

#647CB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647CB7

5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647CB7	#FFFFFF	#000000	##000000
##647CB7	1.00	4.11	5.11	5.11
#FFFFFF	4.11	1.00	21.00	21.00
#000000	5.11	21.00	1.00	1.00
##000000	5.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6781B9

Deuteranopia (green-blind)

#5E7AB6

Tritanopia (blue-blind)

#458891

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #647cb7;
/* rgb */ color: rgb(100, 124, 183);
/* oklch */ color: oklch(59.2% 0.095 266.6);

Tailwind

colors: {
  custom: {
    50: '#94a1cd',
    500: '#647cb7',
    950: '#000000',
  },
}

SCSS

$custom: #647cb7;
$custom-light: #94a1cd;
$custom-dark: #000000;

JSON

{
  "hex": "#647cb7",
  "rgb": {
    "r": 100,
    "g": 124,
    "b": 183
  },
  "hsl": {
    "h": 222.651,
    "s": 36.564,
    "l": 55.49
  },
  "oklch": {
    "l": 0.59248,
    "c": 0.09506,
    "h": 266.6
  },
  "luminance": 0.20544
}

Semantic roles & 50–950 ramp

primary

#647CB7

secondary

#CDC3AA

accent

#AC5BCD

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0D0F13

muted

#7E7E82

Preview Lab

Preview with #647CB7

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

Preview Lab → · Contrast checker → · Palette generator →