#657DB1#657DB1

#657DB1 is a mid, moderate blue. Relative luminance 0.206; OKLCH L 59.2% C 0.085 H 264.9°. Best body text is #000000 at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#657DB1
RGB	rgb(101, 125, 177)
HSL	hsl(221, 33%, 55%)
HSV	hsv(221, 43%, 69%)
CMYK	cmyk(42.9%, 29.4%, 0%, 30.6%)
CIE-LAB	lab(52.52, 5.17, -30.26)
CIE-LCH	lch(52.52, 30.70, 279.70°)
OKLab	oklab(59.23% -0.0075 -0.0846)
OKLCH	oklch(59.23% 0.085 264.9)
XYZ	xyz(20.6338, 20.6071, 44.4768)
Luminance	0.2061 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#657DB1 #B19965

analogous

#65A3B1 #657DB1 #7365B1

triadic

#657DB1 #B1657D #7DB165

tetradic

#657DB1 #B165A3 #B19965 #65B173

square

#657DB1 #B165A3 #B19965 #65B173

split-complementary

#657DB1 #B17365 #A3B165

monochromatic

#344467 #495F90 #657DB1 #8E9FC6 #B6C2DA

Accessibility & contrast

On white

4.10

#657DB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.12

#657DB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #657DB1

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##657DB1	#FFFFFF	#000000	##000000
##657DB1	1.00	4.10	5.12	5.12
#FFFFFF	4.10	1.00	21.00	21.00
#000000	5.12	21.00	1.00	1.00
##000000	5.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B81B3

Deuteranopia (green-blind)

#637AB0

Tritanopia (blue-blind)

#4A888F

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #657db1;
/* rgb */ color: rgb(101, 125, 177);
/* oklch */ color: oklch(59.2% 0.085 264.9);

Tailwind

colors: {
  custom: {
    50: '#94a2c8',
    500: '#657db1',
    950: '#000000',
  },
}

SCSS

$custom: #657db1;
$custom-light: #94a2c8;
$custom-dark: #000000;

JSON

{
  "hex": "#657db1",
  "rgb": {
    "r": 101,
    "g": 125,
    "b": 177
  },
  "hsl": {
    "h": 221.053,
    "s": 32.759,
    "l": 54.51
  },
  "oklch": {
    "l": 0.59231,
    "c": 0.08489,
    "h": 264.9
  },
  "luminance": 0.20608
}

Semantic roles & 50–950 ramp

primary

#657DB1

secondary

#C9BFA9

accent

#A75FC9

background

#F9F9FC

surface

#F2F2F8

border

#CCCCD1

text

#0D0F13

muted

#7E7E82

Preview Lab

Preview with #657DB1

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

Preview Lab → · Contrast checker → · Palette generator →