#557FBA#557FBA

#557FBA is a mid, moderate blue. Relative luminance 0.207; OKLCH L 59.2% C 0.102 H 257.0°. Best body text is #000000 at 5.13:1 contrast (WCAG AA passes).

Color values

HEX	#557FBA
RGB	rgb(85, 127, 186)
HSL	hsl(215, 42%, 53%)
HSV	hsv(215, 54%, 73%)
CMYK	cmyk(54.3%, 31.7%, 0%, 27.1%)
CIE-LAB	lab(52.57, 2.81, -35.43)
CIE-LCH	lch(52.57, 35.54, 274.53°)
OKLab	oklab(59.16% -0.023 -0.0997)
OKLCH	oklch(59.16% 0.102 257)
XYZ	xyz(20.1955, 20.6536, 49.3672)
Luminance	0.2066 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557FBA #BA9055

analogous

#55B1BA #557FBA #5E55BA

triadic

#557FBA #BA557F #7FBA55

tetradic

#557FBA #BA55B1 #BA9055 #55BA5E

square

#557FBA #BA55B1 #BA9055 #55BA5E

split-complementary

#557FBA #BA5E55 #B1BA55

monochromatic

#2B456A #3D6195 #557FBA #81A0CC #ACC1DD

Accessibility & contrast

On white

4.09

#557FBA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.13

#557FBA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557FBA

5.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557FBA	#FFFFFF	#000000	##000000
##557FBA	1.00	4.09	5.13	5.13
#FFFFFF	4.09	1.00	21.00	21.00
#000000	5.13	21.00	1.00	1.00
##000000	5.13	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6783BD

Deuteranopia (green-blind)

#5B79B9

Tritanopia (blue-blind)

#198C94

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #557fba;
/* rgb */ color: rgb(85, 127, 186);
/* oklch */ color: oklch(59.2% 0.102 257.0);

Tailwind

colors: {
  custom: {
    50: '#8ca3cf',
    500: '#557fba',
    950: '#000000',
  },
}

SCSS

$custom: #557fba;
$custom-light: #8ca3cf;
$custom-dark: #000000;

JSON

{
  "hex": "#557fba",
  "rgb": {
    "r": 85,
    "g": 127,
    "b": 186
  },
  "hsl": {
    "h": 215.05,
    "s": 42.259,
    "l": 53.137
  },
  "oklch": {
    "l": 0.59162,
    "c": 0.10237,
    "h": 257
  },
  "luminance": 0.20655
}

Semantic roles & 50–950 ramp

primary

#557FBA

secondary

#CBB9A0

accent

#9E56D2

background

#F8FAFC

surface

#F0F3F9

border

#CBCDD2

text

#0C0F14

muted

#7D7F82

Preview Lab

Preview with #557FBA

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

Preview Lab → · Contrast checker → · Palette generator →