#647CB3#647CB3

#647CB3 is a mid, moderate blue. Relative luminance 0.204; OKLCH L 59.0% C 0.089 H 265.7°. Best body text is #000000 at 5.08:1 contrast (WCAG AA passes).

Color values

HEX	#647CB3
RGB	rgb(100, 124, 179)
HSL	hsl(222, 34%, 55%)
HSV	hsv(222, 44%, 70%)
CMYK	cmyk(44.1%, 30.7%, 0%, 29.8%)
CIE-LAB	lab(52.26, 6.09, -31.82)
CIE-LCH	lch(52.26, 32.40, 280.84°)
OKLab	oklab(59.05% -0.0067 -0.0891)
OKLCH	oklch(59.05% 0.089 265.7)
XYZ	xyz(20.5973, 20.3781, 45.4871)
Luminance	0.2038 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647CB3 #B39B64

analogous

#64A4B3 #647CB3 #7464B3

triadic

#647CB3 #B3647C #7CB364

tetradic

#647CB3 #B364A4 #B39B64 #64B374

square

#647CB3 #B364A4 #B39B64 #64B374

split-complementary

#647CB3 #B37464 #A4B364

monochromatic

#344469 #485E92 #647CB3 #8D9FC7 #B6C1DB

Accessibility & contrast

On white

4.14

#647CB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.08

#647CB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647CB3

5.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647CB3	#FFFFFF	#000000	##000000
##647CB3	1.00	4.14	5.08	5.08
#FFFFFF	4.14	1.00	21.00	21.00
#000000	5.08	21.00	1.00	1.00
##000000	5.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6881B5

Deuteranopia (green-blind)

#6079B2

Tritanopia (blue-blind)

#488790

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #647cb3;
/* rgb */ color: rgb(100, 124, 179);
/* oklch */ color: oklch(59.0% 0.089 265.7);

Tailwind

colors: {
  custom: {
    50: '#94a1ca',
    500: '#647cb3',
    950: '#000000',
  },
}

SCSS

$custom: #647cb3;
$custom-light: #94a1ca;
$custom-dark: #000000;

JSON

{
  "hex": "#647cb3",
  "rgb": {
    "r": 100,
    "g": 124,
    "b": 179
  },
  "hsl": {
    "h": 221.772,
    "s": 34.199,
    "l": 54.706
  },
  "oklch": {
    "l": 0.59046,
    "c": 0.08932,
    "h": 265.7
  },
  "luminance": 0.20379
}

Semantic roles & 50–950 ramp

primary

#647CB3

secondary

#CAC0A9

accent

#A95ECA

background

#F9F9FC

surface

#F2F2F8

border

#CCCCD1

text

#0D0F13

muted

#7E7E82

Preview Lab

Preview with #647CB3

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

Preview Lab → · Contrast checker → · Palette generator →