#557FEF#557FEF

#557FEF is a light, vivid blue. Relative luminance 0.233; OKLCH L 62.3% C 0.175 H 266.0°. Best body text is #000000 at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#557FEF
RGB	rgb(85, 127, 239)
HSL	hsl(224, 83%, 64%)
HSV	hsv(224, 64%, 94%)
CMYK	cmyk(64.4%, 46.9%, 0%, 6.3%)
CIE-LAB	lab(55.42, 20.47, -60.82)
CIE-LCH	lch(55.42, 64.18, 288.60°)
OKLab	oklab(62.29% -0.0121 -0.1741)
OKLCH	oklch(62.29% 0.175 266)
XYZ	xyz(26.9103, 23.3395, 84.7314)
Luminance	0.2334 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557FEF #EFC555

analogous

#55CCEF #557FEF #7855EF

triadic

#557FEF #EF557F #7FEF55

tetradic

#557FEF #EF55CC #EFC555 #55EF78

square

#557FEF #EF55CC #EFC555 #55EF78

split-complementary

#557FEF #EF7855 #CCEF55

monochromatic

#113FB8 #1D55EA #557FEF #8DA9F4 #C5D3FA

Accessibility & contrast

On white

3.70

#557FEF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.67

#557FEF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557FEF

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557FEF	#FFFFFF	#000000	##000000
##557FEF	1.00	3.70	5.67	5.67
#FFFFFF	3.70	1.00	21.00	21.00
#000000	5.67	21.00	1.00	1.00
##000000	5.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#468CF3

Deuteranopia (green-blind)

#267EED

Tritanopia (blue-blind)

#0099AB

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #557fef;
/* rgb */ color: rgb(85, 127, 239);
/* oklch */ color: oklch(62.3% 0.175 266.0);

Tailwind

colors: {
  custom: {
    50: '#93a3f5',
    500: '#557fef',
    950: '#000000',
  },
}

SCSS

$custom: #557fef;
$custom-light: #93a3f5;
$custom-dark: #000000;

JSON

{
  "hex": "#557fef",
  "rgb": {
    "r": 85,
    "g": 127,
    "b": 239
  },
  "hsl": {
    "h": 223.636,
    "s": 82.796,
    "l": 63.529
  },
  "oklch": {
    "l": 0.62291,
    "c": 0.17451,
    "h": 266
  },
  "luminance": 0.23342
}

Semantic roles & 50–950 ramp

primary

#557FEF

secondary

#EBDCB5

accent

#A406DF

background

#F9FAFF

surface

#F2F3FE

border

#CCCDD6

text

#0E0F17

muted

#7E7F85

Preview Lab

Preview with #557FEF

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

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