#647ECB#647ECB

#647ECB is a mid, vivid blue. Relative luminance 0.219; OKLCH L 60.7% C 0.121 H 268.5°. Best body text is #000000 at 5.39:1 contrast (WCAG AA passes).

Color values

HEX	#647ECB
RGB	rgb(100, 126, 203)
HSL	hsl(225, 50%, 59%)
HSV	hsv(225, 51%, 80%)
CMYK	cmyk(50.7%, 37.9%, 0%, 20.4%)
CIE-LAB	lab(53.96, 12.21, -42.87)
CIE-LCH	lch(53.96, 44.58, 285.90°)
OKLab	oklab(60.74% -0.0031 -0.1212)
OKLCH	oklch(60.74% 0.121 268.5)
XYZ	xyz(23.4924, 21.9413, 59.4855)
Luminance	0.2194 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647ECB #CBB164

analogous

#64B2CB #647ECB #7E64CB

triadic

#647ECB #CB647E #7ECB64

tetradic

#647ECB #CB64B2 #CBB164 #64CB7E

square

#647ECB #CB64B2 #CBB164 #64CB7E

split-complementary

#647ECB #CB7E64 #B2CB64

monochromatic

#2D4487 #3D5BB5 #647ECB #92A4DA #C0CAEA

Accessibility & contrast

On white

3.90

#647ECB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.39

#647ECB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647ECB

5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647ECB	#FFFFFF	#000000	##000000
##647ECB	1.00	3.90	5.39	5.39
#FFFFFF	3.90	1.00	21.00	21.00
#000000	5.39	21.00	1.00	1.00
##000000	5.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6086CE

Deuteranopia (green-blind)

#557DC9

Tritanopia (blue-blind)

#368E9B

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #647ecb;
/* rgb */ color: rgb(100, 126, 203);
/* oklch */ color: oklch(60.7% 0.121 268.5);

Tailwind

colors: {
  custom: {
    50: '#96a3db',
    500: '#647ecb',
    950: '#000000',
  },
}

SCSS

$custom: #647ecb;
$custom-light: #96a3db;
$custom-dark: #000000;

JSON

{
  "hex": "#647ecb",
  "rgb": {
    "r": 100,
    "g": 126,
    "b": 203
  },
  "hsl": {
    "h": 224.854,
    "s": 49.758,
    "l": 59.412
  },
  "oklch": {
    "l": 0.60742,
    "c": 0.1212,
    "h": 268.5
  },
  "luminance": 0.21943
}

Semantic roles & 50–950 ramp

primary

#647ECB

secondary

#D9CFB1

accent

#B64FD9

background

#F9FAFD

surface

#F2F3FB

border

#CCCDD4

text

#0E0F15

muted

#7E7F83

Preview Lab

Preview with #647ECB

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

Preview Lab → · Contrast checker → · Palette generator →