#557ECF#557ECF

#557ECF is a mid, vivid blue. Relative luminance 0.214; OKLCH L 60.1% C 0.132 H 262.8°. Best body text is #000000 at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#557ECF
RGB	rgb(85, 126, 207)
HSL	hsl(220, 56%, 57%)
HSV	hsv(220, 59%, 81%)
CMYK	cmyk(58.9%, 39.1%, 0%, 18.8%)
CIE-LAB	lab(53.34, 10.28, -46.19)
CIE-LCH	lch(53.34, 47.32, 282.55°)
OKLab	oklab(60.1% -0.0167 -0.1311)
OKLCH	oklch(60.1% 0.132 262.8)
XYZ	xyz(22.4658, 21.3561, 61.9576)
Luminance	0.2136 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557ECF #CFA655

analogous

#55BBCF #557ECF #6955CF

triadic

#557ECF #CF557E #7ECF55

tetradic

#557ECF #CF55BB #CFA655 #55CF69

square

#557ECF #CF55BB #CFA655 #55CF69

split-complementary

#557ECF #CF6955 #BBCF55

monochromatic

#254584 #335EB4 #557ECF #85A2DC #B4C6EA

Accessibility & contrast

On white

3.98

#557ECF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.27

#557ECF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557ECF

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557ECF	#FFFFFF	#000000	##000000
##557ECF	1.00	3.98	5.27	5.27
#FFFFFF	3.98	1.00	21.00	21.00
#000000	5.27	21.00	1.00	1.00
##000000	5.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B85D2

Deuteranopia (green-blind)

#4B7ACD

Tritanopia (blue-blind)

#00909C

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #557ecf;
/* rgb */ color: rgb(85, 126, 207);
/* oklch */ color: oklch(60.1% 0.132 262.8);

Tailwind

colors: {
  custom: {
    50: '#8ea3de',
    500: '#557ecf',
    950: '#000000',
  },
}

SCSS

$custom: #557ecf;
$custom-light: #8ea3de;
$custom-dark: #000000;

JSON

{
  "hex": "#557ecf",
  "rgb": {
    "r": 85,
    "g": 126,
    "b": 207
  },
  "hsl": {
    "h": 219.836,
    "s": 55.963,
    "l": 57.255
  },
  "oklch": {
    "l": 0.60103,
    "c": 0.13218,
    "h": 262.8
  },
  "luminance": 0.21358
}

Semantic roles & 50–950 ramp

primary

#557ECF

secondary

#D9C8A7

accent

#AD49DF

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0F15

muted

#7E7E83

Preview Lab

Preview with #557ECF

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

Preview Lab → · Contrast checker → · Palette generator →