#557DDA#557DDA

#557DDA is a mid, vivid blue. Relative luminance 0.217; OKLCH L 60.5% C 0.148 H 264.8°. Best body text is #000000 at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#557DDA
RGB	rgb(85, 125, 218)
HSL	hsl(222, 64%, 59%)
HSV	hsv(222, 61%, 85%)
CMYK	cmyk(61%, 42.7%, 0%, 14.5%)
CIE-LAB	lab(53.66, 14.57, -51.88)
CIE-LCH	lch(53.66, 53.89, 285.69°)
OKLab	oklab(60.55% -0.0134 -0.1478)
OKLCH	oklch(60.55% 0.148 264.8)
XYZ	xyz(23.7305, 21.6584, 69.2460)
Luminance	0.2166 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557DDA #DAB255

analogous

#55BFDA #557DDA #7055DA

triadic

#557DDA #DA557D #7DDA55

tetradic

#557DDA #DA55BF #DAB255 #55DA70

square

#557DDA #DA55BF #DAB255 #55DA70

split-complementary

#557DDA #DA7055 #BFDA55

monochromatic

#204394 #2B5AC7 #557DDA #87A3E5 #BACAF0

Accessibility & contrast

On white

3.94

#557DDA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.33

#557DDA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557DDA

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557DDA	#FFFFFF	#000000	##000000
##557DDA	1.00	3.94	5.33	5.33
#FFFFFF	3.94	1.00	21.00	21.00
#000000	5.33	21.00	1.00	1.00
##000000	5.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5387DE

Deuteranopia (green-blind)

#3F7BD8

Tritanopia (blue-blind)

#0092A1

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #557dda;
/* rgb */ color: rgb(85, 125, 218);
/* oklch */ color: oklch(60.5% 0.148 264.8);

Tailwind

colors: {
  custom: {
    50: '#90a2e6',
    500: '#557dda',
    950: '#000000',
  },
}

SCSS

$custom: #557dda;
$custom-light: #90a2e6;
$custom-dark: #000000;

JSON

{
  "hex": "#557dda",
  "rgb": {
    "r": 85,
    "g": 125,
    "b": 218
  },
  "hsl": {
    "h": 221.955,
    "s": 64.251,
    "l": 59.412
  },
  "oklch": {
    "l": 0.60549,
    "c": 0.14846,
    "h": 264.8
  },
  "luminance": 0.2166
}

Semantic roles & 50–950 ramp

primary

#557DDA

secondary

#DFD0AB

accent

#B541E7

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0F16

muted

#7E7E84

Preview Lab

Preview with #557DDA

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

Preview Lab → · Contrast checker → · Palette generator →