#648CB5#648CB5

#648CB5 is a light, moderate cyan. Relative luminance 0.248; OKLCH L 62.7% C 0.076 H 249.7°. Best body text is #000000 at 5.96:1 contrast (WCAG AA passes).

Color values

HEX	#648CB5
RGB	rgb(100, 140, 181)
HSL	hsl(210, 35%, 55%)
HSV	hsv(210, 45%, 71%)
CMYK	cmyk(44.8%, 22.7%, 0%, 29%)
CIE-LAB	lab(56.88, -2.69, -25.80)
CIE-LCH	lch(56.88, 25.94, 264.05°)
OKLab	oklab(62.69% -0.0265 -0.0717)
OKLCH	oklch(62.69% 0.076 249.7)
XYZ	xyz(22.9713, 24.8002, 47.2836)
Luminance	0.2480 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#648CB5 #B58D64

analogous

#64B5B5 #648CB5 #6464B5

triadic

#648CB5 #B5648C #8CB564

tetradic

#648CB5 #B564B5 #B58D64 #64B564

square

#648CB5 #B564B5 #B58D64 #64B564

split-complementary

#648CB5 #B56464 #B5B564

monochromatic

#334F6B #476D95 #648CB5 #8DABC9 #B7C9DD

Accessibility & contrast

On white

3.52

#648CB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.96

#648CB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #648CB5

5.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##648CB5	#FFFFFF	#000000	##000000
##648CB5	1.00	3.52	5.96	5.96
#FFFFFF	3.52	1.00	21.00	21.00
#000000	5.96	21.00	1.00	1.00
##000000	5.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C8DB7

Deuteranopia (green-blind)

#7285B4

Tritanopia (blue-blind)

#44959A

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #648cb5;
/* rgb */ color: rgb(100, 140, 181);
/* oklch */ color: oklch(62.7% 0.076 249.7);

Tailwind

colors: {
  custom: {
    50: '#94adcb',
    500: '#648cb5',
    950: '#000000',
  },
}

SCSS

$custom: #648cb5;
$custom-light: #94adcb;
$custom-dark: #000000;

JSON

{
  "hex": "#648cb5",
  "rgb": {
    "r": 100,
    "g": 140,
    "b": 181
  },
  "hsl": {
    "h": 210.37,
    "s": 35.371,
    "l": 55.098
  },
  "oklch": {
    "l": 0.62687,
    "c": 0.07649,
    "h": 249.7
  },
  "luminance": 0.24802
}

Semantic roles & 50–950 ramp

primary

#648CB5

secondary

#CBBBA9

accent

#955CCB

background

#F9FAFC

surface

#F2F4F8

border

#CCCED1

text

#0D1013

muted

#7E7F82

Preview Lab

Preview with #648CB5

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

Preview Lab → · Contrast checker → · Palette generator →