#557CEF#557CEF

#557CEF is a mid, vivid blue. Relative luminance 0.226; OKLCH L 61.7% C 0.178 H 267.0°. Best body text is #000000 at 5.52:1 contrast (WCAG AA passes).

Color values

HEX	#557CEF
RGB	rgb(85, 124, 239)
HSL	hsl(225, 83%, 64%)
HSV	hsv(225, 64%, 94%)
CMYK	cmyk(64.4%, 48.1%, 0%, 6.3%)
CIE-LAB	lab(54.63, 22.31, -62.09)
CIE-LCH	lch(54.63, 65.97, 289.76°)
OKLab	oklab(61.69% -0.0093 -0.1778)
OKLCH	oklch(61.69% 0.178 267)
XYZ	xyz(26.5286, 22.5761, 84.6042)
Luminance	0.2258 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557CEF #EFC855

analogous

#55C9EF #557CEF #7B55EF

triadic

#557CEF #EF557C #7CEF55

tetradic

#557CEF #EF55C9 #EFC855 #55EF7B

square

#557CEF #EF55C9 #EFC855 #55EF7B

split-complementary

#557CEF #EF7B55 #C9EF55

monochromatic

#113CB8 #1D51EA #557CEF #8DA7F4 #C5D2FA

Accessibility & contrast

On white

3.81

#557CEF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.52

#557CEF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557CEF

5.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557CEF	#FFFFFF	#000000	##000000
##557CEF	1.00	3.81	5.52	5.52
#FFFFFF	3.81	1.00	21.00	21.00
#000000	5.52	21.00	1.00	1.00
##000000	5.52	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F8AF3

Deuteranopia (green-blind)

#1A7CED

Tritanopia (blue-blind)

#0097AA

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #557cef;
/* rgb */ color: rgb(85, 124, 239);
/* oklch */ color: oklch(61.7% 0.178 267.0);

Tailwind

colors: {
  custom: {
    50: '#93a1f5',
    500: '#557cef',
    950: '#000000',
  },
}

SCSS

$custom: #557cef;
$custom-light: #93a1f5;
$custom-dark: #000000;

JSON

{
  "hex": "#557cef",
  "rgb": {
    "r": 85,
    "g": 124,
    "b": 239
  },
  "hsl": {
    "h": 224.805,
    "s": 82.796,
    "l": 63.529
  },
  "oklch": {
    "l": 0.61691,
    "c": 0.17809,
    "h": 267
  },
  "luminance": 0.22579
}

Semantic roles & 50–950 ramp

primary

#557CEF

secondary

#EBDDB5

accent

#A806DF

background

#F9F9FF

surface

#F2F2FE

border

#CCCCD6

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #557CEF

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

Preview Lab → · Contrast checker → · Palette generator →