#647EB5#647EB5

#647EB5 is a mid, moderate blue. Relative luminance 0.210; OKLCH L 59.6% C 0.090 H 264.5°. Best body text is #000000 at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#647EB5
RGB	rgb(100, 126, 181)
HSL	hsl(221, 35%, 55%)
HSV	hsv(221, 45%, 71%)
CMYK	cmyk(44.8%, 30.4%, 0%, 29%)
CIE-LAB	lab(52.91, 5.50, -31.95)
CIE-LCH	lch(52.91, 32.42, 279.76°)
OKLab	oklab(59.58% -0.0087 -0.0895)
OKLCH	oklch(59.58% 0.09 264.5)
XYZ	xyz(21.0542, 20.9660, 46.6445)
Luminance	0.2097 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647EB5 #B59B64

analogous

#64A6B5 #647EB5 #7364B5

triadic

#647EB5 #B5647E #7EB564

tetradic

#647EB5 #B564A6 #B59B64 #64B573

square

#647EB5 #B564A6 #B59B64 #64B573

split-complementary

#647EB5 #B57364 #A6B564

monochromatic

#33456B #476095 #647EB5 #8DA0C9 #B7C3DD

Accessibility & contrast

On white

4.04

#647EB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.19

#647EB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647EB5

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647EB5	#FFFFFF	#000000	##000000
##647EB5	1.00	4.04	5.19	5.19
#FFFFFF	4.04	1.00	21.00	21.00
#000000	5.19	21.00	1.00	1.00
##000000	5.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A82B7

Deuteranopia (green-blind)

#627BB4

Tritanopia (blue-blind)

#468A91

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #647eb5;
/* rgb */ color: rgb(100, 126, 181);
/* oklch */ color: oklch(59.6% 0.090 264.5);

Tailwind

colors: {
  custom: {
    50: '#94a3cb',
    500: '#647eb5',
    950: '#000000',
  },
}

SCSS

$custom: #647eb5;
$custom-light: #94a3cb;
$custom-dark: #000000;

JSON

{
  "hex": "#647eb5",
  "rgb": {
    "r": 100,
    "g": 126,
    "b": 181
  },
  "hsl": {
    "h": 220.741,
    "s": 35.371,
    "l": 55.098
  },
  "oklch": {
    "l": 0.59582,
    "c": 0.08988,
    "h": 264.5
  },
  "luminance": 0.20967
}

Semantic roles & 50–950 ramp

primary

#647EB5

secondary

#CBC0A9

accent

#A85CCB

background

#F9FAFC

surface

#F2F3F8

border

#CCCDD1

text

#0D0F13

muted

#7E7F82

Preview Lab

Preview with #647EB5

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

Preview Lab → · Contrast checker → · Palette generator →