#558CDD#558CDD

#558CDD is a light, vivid blue. Relative luminance 0.259; OKLCH L 63.9% C 0.136 H 258.0°. Best body text is #000000 at 6.18:1 contrast (WCAG AA passes).

Color values

HEX	#558CDD
RGB	rgb(85, 140, 221)
HSL	hsl(216, 67%, 60%)
HSV	hsv(216, 62%, 87%)
CMYK	cmyk(61.5%, 36.7%, 0%, 13.3%)
CIE-LAB	lab(57.95, 6.55, -46.76)
CIE-LCH	lch(57.95, 47.21, 277.97°)
OKLab	oklab(63.92% -0.0282 -0.1327)
OKLCH	oklch(63.92% 0.136 258)
XYZ	xyz(26.1709, 25.9055, 72.0137)
Luminance	0.2591 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#558CDD #DDA655

analogous

#55D0DD #558CDD #6255DD

triadic

#558CDD #DD558C #8CDD55

tetradic

#558CDD #DD55D0 #DDA655 #55DD62

square

#558CDD #DD55D0 #DDA655 #55DD62

split-complementary

#558CDD #DD6255 #D0DD55

monochromatic

#1F5099 #296BCC #558CDD #88AFE7 #BBD1F1

Accessibility & contrast

On white

3.40

#558CDD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.18

#558CDD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #558CDD

6.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##558CDD	#FFFFFF	#000000	##000000
##558CDD	1.00	3.40	6.18	6.18
#FFFFFF	3.40	1.00	21.00	21.00
#000000	6.18	21.00	1.00	1.00
##000000	6.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6992E0

Deuteranopia (green-blind)

#5785DB

Tritanopia (blue-blind)

#009EAA

Achromatopsia (no color)

#8B8B8B

Design tokens & code

CSS

--color: #558cdd;
/* rgb */ color: rgb(85, 140, 221);
/* oklch */ color: oklch(63.9% 0.136 258.0);

Tailwind

colors: {
  custom: {
    50: '#90ade8',
    500: '#558cdd',
    950: '#000000',
  },
}

SCSS

$custom: #558cdd;
$custom-light: #90ade8;
$custom-dark: #000000;

JSON

{
  "hex": "#558cdd",
  "rgb": {
    "r": 85,
    "g": 140,
    "b": 221
  },
  "hsl": {
    "h": 215.735,
    "s": 66.667,
    "l": 60
  },
  "oklch": {
    "l": 0.63917,
    "c": 0.13563,
    "h": 258
  },
  "luminance": 0.25908
}

Semantic roles & 50–950 ramp

primary

#558CDD

secondary

#E1CCAD

accent

#A43EEA

background

#F9FAFE

surface

#F2F4FC

border

#CCCED5

text

#0E1016

muted

#7E7F84

Preview Lab

Preview with #558CDD

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

Preview Lab → · Contrast checker → · Palette generator →