#557BB2#557BB2

#557BB2 is a mid, moderate blue. Relative luminance 0.193; OKLCH L 57.9% C 0.096 H 257.6°. Best body text is #000000 at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#557BB2
RGB	rgb(85, 123, 178)
HSL	hsl(215, 38%, 52%)
HSV	hsv(215, 52%, 70%)
CMYK	cmyk(52.2%, 30.9%, 0%, 30.2%)
CIE-LAB	lab(51.05, 2.65, -33.20)
CIE-LCH	lch(51.05, 33.31, 274.56°)
OKLab	oklab(57.85% -0.0205 -0.0933)
OKLCH	oklch(57.85% 0.096 257.6)
XYZ	xyz(18.8624, 19.3102, 44.8441)
Luminance	0.1931 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BB2 #B28C55

analogous

#55AAB2 #557BB2 #5E55B2

triadic

#557BB2 #B2557B #7BB255

tetradic

#557BB2 #B255AA #B28C55 #55B25E

square

#557BB2 #B255AA #B28C55 #55B25E

split-complementary

#557BB2 #B25E55 #AAB255

monochromatic

#2C4161 #3F5E8B #557BB2 #7F9CC5 #A9BCD8

Accessibility & contrast

On white

4.32

#557BB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.86

#557BB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BB2

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BB2	#FFFFFF	#000000	##000000
##557BB2	1.00	4.32	4.86	4.86
#FFFFFF	4.32	1.00	21.00	21.00
#000000	4.86	21.00	1.00	1.00
##000000	4.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#657EB4

Deuteranopia (green-blind)

#5A76B1

Tritanopia (blue-blind)

#26878F

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #557bb2;
/* rgb */ color: rgb(85, 123, 178);
/* oklch */ color: oklch(57.9% 0.096 257.6);

Tailwind

colors: {
  custom: {
    50: '#8ba0c9',
    500: '#557bb2',
    950: '#000000',
  },
}

SCSS

$custom: #557bb2;
$custom-light: #8ba0c9;
$custom-dark: #000000;

JSON

{
  "hex": "#557bb2",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 178
  },
  "hsl": {
    "h": 215.484,
    "s": 37.652,
    "l": 51.569
  },
  "oklch": {
    "l": 0.57851,
    "c": 0.09556,
    "h": 257.6
  },
  "luminance": 0.19312
}

Semantic roles & 50–950 ramp

primary

#557BB2

secondary

#C6B59D

accent

#9E5ACE

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0E13

muted

#7D7E82

Preview Lab

Preview with #557BB2

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

Preview Lab → · Contrast checker → · Palette generator →