#657BDF#657BDF

#657BDF is a mid, vivid blue. Relative luminance 0.223; OKLCH L 61.4% C 0.153 H 271.9°. Best body text is #000000 at 5.45:1 contrast (WCAG AA passes).

Color values

HEX	#657BDF
RGB	rgb(101, 123, 223)
HSL	hsl(229, 66%, 64%)
HSV	hsv(229, 55%, 87%)
CMYK	cmyk(54.7%, 44.8%, 0%, 12.5%)
CIE-LAB	lab(54.30, 20.57, -53.63)
CIE-LCH	lch(54.30, 57.44, 290.99°)
OKLab	oklab(61.37% 0.005 -0.1527)
OKLCH	oklch(61.37% 0.153 271.9)
XYZ	xyz(25.7647, 22.2585, 72.7364)
Luminance	0.2226 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#657BDF #DFC965

analogous

#65B8DF #657BDF #8C65DF

triadic

#657BDF #DF657B #7BDF65

tetradic

#657BDF #DF65B8 #DFC965 #65DF8C

square

#657BDF #DF65B8 #DFC965 #65DF8C

split-complementary

#657BDF #DF8C65 #B8DF65

monochromatic

#233BA7 #3250D4 #657BDF #98A6EA #CAD2F4

Accessibility & contrast

On white

3.85

#657BDF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.45

#657BDF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #657BDF

5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##657BDF	#FFFFFF	#000000	##000000
##657BDF	1.00	3.85	5.45	5.45
#FFFFFF	3.85	1.00	21.00	21.00
#000000	5.45	21.00	1.00	1.00
##000000	5.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E87E3

Deuteranopia (green-blind)

#3F7DDD

Tritanopia (blue-blind)

#2291A2

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #657bdf;
/* rgb */ color: rgb(101, 123, 223);
/* oklch */ color: oklch(61.4% 0.153 271.9);

Tailwind

colors: {
  custom: {
    50: '#99a0e9',
    500: '#657bdf',
    950: '#000000',
  },
}

SCSS

$custom: #657bdf;
$custom-light: #99a0e9;
$custom-dark: #000000;

JSON

{
  "hex": "#657bdf",
  "rgb": {
    "r": 101,
    "g": 123,
    "b": 223
  },
  "hsl": {
    "h": 229.18,
    "s": 65.591,
    "l": 63.529
  },
  "oklch": {
    "l": 0.61365,
    "c": 0.15274,
    "h": 271.9
  },
  "luminance": 0.2226
}

Semantic roles & 50–950 ramp

primary

#657BDF

secondary

#E6DEBA

accent

#AD18CD

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0F0E16

muted

#7E7E84

Preview Lab

Preview with #657BDF

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

Preview Lab → · Contrast checker → · Palette generator →