#557DBA#557DBA

#557DBA is a mid, moderate blue. Relative luminance 0.201; OKLCH L 58.7% C 0.104 H 258.6°. Best body text is #000000 at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#557DBA
RGB	rgb(85, 125, 186)
HSL	hsl(216, 42%, 53%)
HSV	hsv(216, 54%, 73%)
CMYK	cmyk(54.3%, 32.8%, 0%, 27.1%)
CIE-LAB	lab(52.00, 4.00, -36.32)
CIE-LCH	lch(52.00, 36.54, 276.29°)
OKLab	oklab(58.72% -0.0207 -0.1024)
OKLCH	oklch(58.72% 0.104 258.6)
XYZ	xyz(19.9398, 20.1422, 49.2819)
Luminance	0.2014 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557DBA #BA9255

analogous

#55AFBA #557DBA #6055BA

triadic

#557DBA #BA557D #7DBA55

tetradic

#557DBA #BA55AF #BA9255 #55BA60

square

#557DBA #BA55AF #BA9255 #55BA60

split-complementary

#557DBA #BA6055 #AFBA55

monochromatic

#2B446A #3D6095 #557DBA #819ECC #ACC0DD

Accessibility & contrast

On white

4.18

#557DBA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.03

#557DBA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557DBA

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557DBA	#FFFFFF	#000000	##000000
##557DBA	1.00	4.18	5.03	5.03
#FFFFFF	4.18	1.00	21.00	21.00
#000000	5.03	21.00	1.00	1.00
##000000	5.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6581BD

Deuteranopia (green-blind)

#5878B9

Tritanopia (blue-blind)

#1A8B93

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #557dba;
/* rgb */ color: rgb(85, 125, 186);
/* oklch */ color: oklch(58.7% 0.104 258.6);

Tailwind

colors: {
  custom: {
    50: '#8ca2cf',
    500: '#557dba',
    950: '#000000',
  },
}

SCSS

$custom: #557dba;
$custom-light: #8ca2cf;
$custom-dark: #000000;

JSON

{
  "hex": "#557dba",
  "rgb": {
    "r": 85,
    "g": 125,
    "b": 186
  },
  "hsl": {
    "h": 216.238,
    "s": 42.259,
    "l": 53.137
  },
  "oklch": {
    "l": 0.58716,
    "c": 0.10443,
    "h": 258.6
  },
  "luminance": 0.20144
}

Semantic roles & 50–950 ramp

primary

#557DBA

secondary

#CBBAA0

accent

#A156D2

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0F14

muted

#7D7E82

Preview Lab

Preview with #557DBA

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

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