#647FBF#647FBF

#647FBF is a mid, moderate blue. Relative luminance 0.216; OKLCH L 60.3% C 0.103 H 266.0°. Best body text is #000000 at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#647FBF
RGB	rgb(100, 127, 191)
HSL	hsl(222, 42%, 57%)
HSV	hsv(222, 48%, 75%)
CMYK	cmyk(47.6%, 33.5%, 0%, 25.1%)
CIE-LAB	lab(53.65, 7.91, -36.53)
CIE-LCH	lch(53.65, 37.37, 282.22°)
OKLab	oklab(60.31% -0.0072 -0.1027)
OKLCH	oklch(60.31% 0.103 266)
XYZ	xyz(22.2458, 21.6483, 52.2864)
Luminance	0.2165 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647FBF #BFA464

analogous

#64ADBF #647FBF #7764BF

triadic

#647FBF #BF647F #7FBF64

tetradic

#647FBF #BF64AD #BFA464 #64BF77

square

#647FBF #BF64AD #BFA464 #64BF77

split-complementary

#647FBF #BF7764 #ADBF64

monochromatic

#314677 #435FA3 #647FBF #8FA3D1 #BBC7E3

Accessibility & contrast

On white

3.94

#647FBF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.33

#647FBF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647FBF

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647FBF	#FFFFFF	#000000	##000000
##647FBF	1.00	3.94	5.33	5.33
#FFFFFF	3.94	1.00	21.00	21.00
#000000	5.33	21.00	1.00	1.00
##000000	5.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6785C2

Deuteranopia (green-blind)

#5E7CBE

Tritanopia (blue-blind)

#408D96

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #647fbf;
/* rgb */ color: rgb(100, 127, 191);
/* oklch */ color: oklch(60.3% 0.103 266.0);

Tailwind

colors: {
  custom: {
    50: '#95a3d2',
    500: '#647fbf',
    950: '#000000',
  },
}

SCSS

$custom: #647fbf;
$custom-light: #95a3d2;
$custom-dark: #000000;

JSON

{
  "hex": "#647fbf",
  "rgb": {
    "r": 100,
    "g": 127,
    "b": 191
  },
  "hsl": {
    "h": 222.198,
    "s": 41.553,
    "l": 57.059
  },
  "oklch": {
    "l": 0.60308,
    "c": 0.10294,
    "h": 266
  },
  "luminance": 0.2165
}

Semantic roles & 50–950 ramp

primary

#647FBF

secondary

#D2C7AD

accent

#AD56D1

background

#F9FAFC

surface

#F2F3F9

border

#CCCDD2

text

#0E0F14

muted

#7E7F82

Preview Lab

Preview with #647FBF

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

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