#577AEF#577AEF

#577AEF is a mid, vivid blue. Relative luminance 0.222; OKLCH L 61.4% C 0.180 H 268.2°. Best body text is #000000 at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#577AEF
RGB	rgb(87, 122, 239)
HSL	hsl(226, 83%, 64%)
HSV	hsv(226, 64%, 94%)
CMYK	cmyk(63.6%, 49%, 0%, 6.3%)
CIE-LAB	lab(54.21, 23.86, -62.76)
CIE-LCH	lch(54.21, 67.14, 290.81°)
OKLab	oklab(61.4% -0.0056 -0.1798)
OKLCH	oklch(61.4% 0.18 268.2)
XYZ	xyz(26.4647, 22.1749, 84.5301)
Luminance	0.2218 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577AEF #EFCC57

analogous

#57C6EF #577AEF #8057EF

triadic

#577AEF #EF577A #7AEF57

tetradic

#577AEF #EF57C6 #EFCC57 #57EF80

square

#577AEF #EF57C6 #EFCC57 #57EF80

split-complementary

#577AEF #EF8057 #C6EF57

monochromatic

#1238BA #1F4EEA #577AEF #8FA6F4 #C7D2FA

Accessibility & contrast

On white

3.86

#577AEF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.44

#577AEF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577AEF

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577AEF	#FFFFFF	#000000	##000000
##577AEF	1.00	3.86	5.44	5.44
#FFFFFF	3.86	1.00	21.00	21.00
#000000	5.44	21.00	1.00	1.00
##000000	5.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A89F3

Deuteranopia (green-blind)

#117BED

Tritanopia (blue-blind)

#0095A9

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #577aef;
/* rgb */ color: rgb(87, 122, 239);
/* oklch */ color: oklch(61.4% 0.180 268.2);

Tailwind

colors: {
  custom: {
    50: '#94a0f5',
    500: '#577aef',
    950: '#000000',
  },
}

SCSS

$custom: #577aef;
$custom-light: #94a0f5;
$custom-dark: #000000;

JSON

{
  "hex": "#577aef",
  "rgb": {
    "r": 87,
    "g": 122,
    "b": 239
  },
  "hsl": {
    "h": 226.184,
    "s": 82.609,
    "l": 63.922
  },
  "oklch": {
    "l": 0.61397,
    "c": 0.17991,
    "h": 268.2
  },
  "luminance": 0.22177
}

Semantic roles & 50–950 ramp

primary

#577AEF

secondary

#ECDFB6

accent

#AD06DF

background

#F9F9FF

surface

#F2F2FE

border

#CCCCD6

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #577AEF

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

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