#657DDD#657DDD

#657DDD is a mid, vivid blue. Relative luminance 0.227; OKLCH L 61.6% C 0.147 H 271.0°. Best body text is #000000 at 5.53:1 contrast (WCAG AA passes).

Color values

HEX	#657DDD
RGB	rgb(101, 125, 221)
HSL	hsl(228, 64%, 63%)
HSV	hsv(228, 54%, 87%)
CMYK	cmyk(54.3%, 43.4%, 0%, 13.3%)
CIE-LAB	lab(54.71, 18.72, -51.85)
CIE-LCH	lch(54.71, 55.12, 289.86°)
OKLab	oklab(61.64% 0.0025 -0.1474)
OKLCH	oklch(61.64% 0.147 271)
XYZ	xyz(25.7473, 22.6526, 71.4082)
Luminance	0.2265 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#657DDD #DDC565

analogous

#65B9DD #657DDD #8965DD

triadic

#657DDD #DD657D #7DDD65

tetradic

#657DDD #DD65B9 #DDC565 #65DD89

square

#657DDD #DD65B9 #DDC565 #65DD89

split-complementary

#657DDD #DD8965 #B9DD65

monochromatic

#243EA4 #3353D2 #657DDD #97A7E8 #C9D2F3

Accessibility & contrast

On white

3.80

#657DDD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.53

#657DDD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #657DDD

5.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##657DDD	#FFFFFF	#000000	##000000
##657DDD	1.00	3.80	5.53	5.53
#FFFFFF	3.80	1.00	21.00	21.00
#000000	5.53	21.00	1.00	1.00
##000000	5.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5388E1

Deuteranopia (green-blind)

#457EDB

Tritanopia (blue-blind)

#2592A2

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #657ddd;
/* rgb */ color: rgb(101, 125, 221);
/* oklch */ color: oklch(61.6% 0.147 271.0);

Tailwind

colors: {
  custom: {
    50: '#99a2e8',
    500: '#657ddd',
    950: '#000000',
  },
}

SCSS

$custom: #657ddd;
$custom-light: #99a2e8;
$custom-dark: #000000;

JSON

{
  "hex": "#657ddd",
  "rgb": {
    "r": 101,
    "g": 125,
    "b": 221
  },
  "hsl": {
    "h": 228,
    "s": 63.83,
    "l": 63.137
  },
  "oklch": {
    "l": 0.61644,
    "c": 0.14744,
    "h": 271
  },
  "luminance": 0.22654
}

Semantic roles & 50–950 ramp

primary

#657DDD

secondary

#E4DCB9

accent

#A81ACC

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0F0F16

muted

#7E7E84

Preview Lab

Preview with #657DDD

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

Preview Lab → · Contrast checker → · Palette generator →