#657EB3#657EB3

#657EB3 is a mid, moderate blue. Relative luminance 0.209; OKLCH L 59.5% C 0.087 H 264.5°. Best body text is #000000 at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#657EB3
RGB	rgb(101, 126, 179)
HSL	hsl(221, 34%, 55%)
HSV	hsv(221, 44%, 70%)
CMYK	cmyk(43.6%, 29.6%, 0%, 29.8%)
CIE-LAB	lab(52.89, 5.17, -30.84)
CIE-LCH	lch(52.89, 31.27, 279.51°)
OKLab	oklab(59.55% -0.0082 -0.0862)
OKLCH	oklch(59.55% 0.087 264.5)
XYZ	xyz(20.9618, 20.9419, 45.5767)
Luminance	0.2094 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#657EB3 #B39A65

analogous

#65A5B3 #657EB3 #7365B3

triadic

#657EB3 #B3657E #7EB365

tetradic

#657EB3 #B365A5 #B39A65 #65B373

square

#657EB3 #B365A5 #B39A65 #65B373

split-complementary

#657EB3 #B37365 #A5B365

monochromatic

#34456A #486093 #657EB3 #8EA0C7 #B7C3DB

Accessibility & contrast

On white

4.05

#657EB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.19

#657EB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #657EB3

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##657EB3	#FFFFFF	#000000	##000000
##657EB3	1.00	4.05	5.19	5.19
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.19	21.00	1.00	1.00
##000000	5.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B82B5

Deuteranopia (green-blind)

#637BB2

Tritanopia (blue-blind)

#498991

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #657eb3;
/* rgb */ color: rgb(101, 126, 179);
/* oklch */ color: oklch(59.5% 0.087 264.5);

Tailwind

colors: {
  custom: {
    50: '#94a3ca',
    500: '#657eb3',
    950: '#000000',
  },
}

SCSS

$custom: #657eb3;
$custom-light: #94a3ca;
$custom-dark: #000000;

JSON

{
  "hex": "#657eb3",
  "rgb": {
    "r": 101,
    "g": 126,
    "b": 179
  },
  "hsl": {
    "h": 220.769,
    "s": 33.913,
    "l": 54.902
  },
  "oklch": {
    "l": 0.59548,
    "c": 0.08661,
    "h": 264.5
  },
  "luminance": 0.20943
}

Semantic roles & 50–950 ramp

primary

#657EB3

secondary

#CAC0A9

accent

#A75ECA

background

#F9FAFC

surface

#F2F3F8

border

#CCCDD1

text

#0D0F13

muted

#7E7F82

Preview Lab

Preview with #657EB3

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

Preview Lab → · Contrast checker → · Palette generator →