#657EB2#657EB2

#657EB2 is a mid, moderate blue. Relative luminance 0.209; OKLCH L 59.5% C 0.085 H 264.3°. Best body text is #000000 at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#657EB2
RGB	rgb(101, 126, 178)
HSL	hsl(221, 33%, 55%)
HSV	hsv(221, 43%, 70%)
CMYK	cmyk(43.3%, 29.2%, 0%, 30.2%)
CIE-LAB	lab(52.84, 4.87, -30.33)
CIE-LCH	lch(52.84, 30.72, 279.12°)
OKLab	oklab(59.5% -0.0085 -0.0848)
OKLCH	oklch(59.5% 0.085 264.3)
XYZ	xyz(20.8610, 20.9016, 45.0460)
Luminance	0.2090 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#657EB2 #B29965

analogous

#65A5B2 #657EB2 #7265B2

triadic

#657EB2 #B2657E #7EB265

tetradic

#657EB2 #B265A5 #B29965 #65B272

square

#657EB2 #B265A5 #B29965 #65B272

split-complementary

#657EB2 #B27265 #A5B265

monochromatic

#344568 #496091 #657EB2 #8EA0C6 #B7C2DB

Accessibility & contrast

On white

4.05

#657EB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.18

#657EB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #657EB2

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##657EB2	#FFFFFF	#000000	##000000
##657EB2	1.00	4.05	5.18	5.18
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.18	21.00	1.00	1.00
##000000	5.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B82B4

Deuteranopia (green-blind)

#637BB1

Tritanopia (blue-blind)

#4A8990

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #657eb2;
/* rgb */ color: rgb(101, 126, 178);
/* oklch */ color: oklch(59.5% 0.085 264.3);

Tailwind

colors: {
  custom: {
    50: '#94a3c9',
    500: '#657eb2',
    950: '#000000',
  },
}

SCSS

$custom: #657eb2;
$custom-light: #94a3c9;
$custom-dark: #000000;

JSON

{
  "hex": "#657eb2",
  "rgb": {
    "r": 101,
    "g": 126,
    "b": 178
  },
  "hsl": {
    "h": 220.519,
    "s": 33.333,
    "l": 54.706
  },
  "oklch": {
    "l": 0.59499,
    "c": 0.08519,
    "h": 264.3
  },
  "luminance": 0.20903
}

Semantic roles & 50–950 ramp

primary

#657EB2

secondary

#CABFA9

accent

#A75EC9

background

#F9FAFC

surface

#F2F3F8

border

#CCCDD1

text

#0D0F13

muted

#7E7F82

Preview Lab

Preview with #657EB2

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

Preview Lab → · Contrast checker → · Palette generator →