#657BB1#657BB1

#657BB1 is a mid, moderate blue. Relative luminance 0.201; OKLCH L 58.8% C 0.087 H 266.8°. Best body text is #000000 at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#657BB1
RGB	rgb(101, 123, 177)
HSL	hsl(223, 33%, 55%)
HSV	hsv(223, 43%, 69%)
CMYK	cmyk(42.9%, 30.5%, 0%, 30.6%)
CIE-LAB	lab(51.96, 6.37, -31.14)
CIE-LCH	lch(51.96, 31.78, 281.55°)
OKLab	oklab(58.79% -0.0049 -0.0871)
OKLCH	oklch(58.79% 0.087 266.8)
XYZ	xyz(20.3831, 20.1058, 44.3932)
Luminance	0.2011 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#657BB1 #B19B65

analogous

#65A1B1 #657BB1 #7565B1

triadic

#657BB1 #B1657B #7BB165

tetradic

#657BB1 #B165A1 #B19B65 #65B175

square

#657BB1 #B165A1 #B19B65 #65B175

split-complementary

#657BB1 #B17565 #A1B165

monochromatic

#344367 #495D90 #657BB1 #8E9EC6 #B6C1DA

Accessibility & contrast

On white

4.18

#657BB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.02

#657BB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #657BB1

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##657BB1	#FFFFFF	#000000	##000000
##657BB1	1.00	4.18	5.02	5.02
#FFFFFF	4.18	1.00	21.00	21.00
#000000	5.02	21.00	1.00	1.00
##000000	5.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6880B3

Deuteranopia (green-blind)

#6079B0

Tritanopia (blue-blind)

#4B868E

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #657bb1;
/* rgb */ color: rgb(101, 123, 177);
/* oklch */ color: oklch(58.8% 0.087 266.8);

Tailwind

colors: {
  custom: {
    50: '#94a1c8',
    500: '#657bb1',
    950: '#000000',
  },
}

SCSS

$custom: #657bb1;
$custom-light: #94a1c8;
$custom-dark: #000000;

JSON

{
  "hex": "#657bb1",
  "rgb": {
    "r": 101,
    "g": 123,
    "b": 177
  },
  "hsl": {
    "h": 222.632,
    "s": 32.759,
    "l": 54.51
  },
  "oklch": {
    "l": 0.58795,
    "c": 0.08722,
    "h": 266.8
  },
  "luminance": 0.20107
}

Semantic roles & 50–950 ramp

primary

#657BB1

secondary

#C9C0A9

accent

#AA5FC9

background

#F9F9FC

surface

#F2F2F8

border

#CCCCD1

text

#0D0E13

muted

#7E7E82

Preview Lab

Preview with #657BB1

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

Preview Lab → · Contrast checker → · Palette generator →