#557DEF#557DEF

#557DEF is a mid, vivid blue. Relative luminance 0.228; OKLCH L 61.9% C 0.177 H 266.7°. Best body text is #000000 at 5.57:1 contrast (WCAG AA passes).

Color values

HEX	#557DEF
RGB	rgb(85, 125, 239)
HSL	hsl(224, 83%, 64%)
HSV	hsv(224, 64%, 94%)
CMYK	cmyk(64.4%, 47.7%, 0%, 6.3%)
CIE-LAB	lab(54.89, 21.70, -61.67)
CIE-LCH	lch(54.89, 65.37, 289.38°)
OKLab	oklab(61.89% -0.0102 -0.1766)
OKLCH	oklch(61.89% 0.177 266.7)
XYZ	xyz(26.6545, 22.8280, 84.6462)
Luminance	0.2283 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557DEF #EFC755

analogous

#55CAEF #557DEF #7A55EF

triadic

#557DEF #EF557D #7DEF55

tetradic

#557DEF #EF55CA #EFC755 #55EF7A

square

#557DEF #EF55CA #EFC755 #55EF7A

split-complementary

#557DEF #EF7A55 #CAEF55

monochromatic

#113DB8 #1D52EA #557DEF #8DA8F4 #C5D3FA

Accessibility & contrast

On white

3.77

#557DEF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.57

#557DEF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557DEF

5.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557DEF	#FFFFFF	#000000	##000000
##557DEF	1.00	3.77	5.57	5.57
#FFFFFF	3.77	1.00	21.00	21.00
#000000	5.57	21.00	1.00	1.00
##000000	5.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#418BF3

Deuteranopia (green-blind)

#1E7DED

Tritanopia (blue-blind)

#0097AA

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #557def;
/* rgb */ color: rgb(85, 125, 239);
/* oklch */ color: oklch(61.9% 0.177 266.7);

Tailwind

colors: {
  custom: {
    50: '#93a2f5',
    500: '#557def',
    950: '#000000',
  },
}

SCSS

$custom: #557def;
$custom-light: #93a2f5;
$custom-dark: #000000;

JSON

{
  "hex": "#557def",
  "rgb": {
    "r": 85,
    "g": 125,
    "b": 239
  },
  "hsl": {
    "h": 224.416,
    "s": 82.796,
    "l": 63.529
  },
  "oklch": {
    "l": 0.6189,
    "c": 0.1769,
    "h": 266.7
  },
  "luminance": 0.22831
}

Semantic roles & 50–950 ramp

primary

#557DEF

secondary

#EBDDB5

accent

#A706DF

background

#F9F9FF

surface

#F2F2FE

border

#CCCCD6

text

#0E0F17

muted

#7E7E85

Preview Lab

Preview with #557DEF

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

Preview Lab → · Contrast checker → · Palette generator →