#577EBF#577EBF

#577EBF is a mid, moderate blue. Relative luminance 0.207; OKLCH L 59.3% C 0.109 H 260.2°. Best body text is #000000 at 5.14:1 contrast (WCAG AA passes).

Color values

HEX	#577EBF
RGB	rgb(87, 126, 191)
HSL	hsl(218, 45%, 55%)
HSV	hsv(218, 54%, 75%)
CMYK	cmyk(54.5%, 34%, 0%, 25.1%)
CIE-LAB	lab(52.63, 5.46, -38.19)
CIE-LCH	lch(52.63, 38.58, 278.14°)
OKLab	oklab(59.32% -0.0186 -0.1077)
OKLCH	oklch(59.32% 0.109 260.2)
XYZ	xyz(20.7921, 20.7079, 52.1815)
Luminance	0.2071 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577EBF #BF9857

analogous

#57B2BF #577EBF #6457BF

triadic

#577EBF #BF577E #7EBF57

tetradic

#577EBF #BF57B2 #BF9857 #57BF64

square

#577EBF #BF57B2 #BF9857 #57BF64

split-complementary

#577EBF #BF6457 #B2BF57

monochromatic

#2B4571 #3C609D #577EBF #83A0D0 #B0C2E1

Accessibility & contrast

On white

4.08

#577EBF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.14

#577EBF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577EBF

5.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577EBF	#FFFFFF	#000000	##000000
##577EBF	1.00	4.08	5.14	5.14
#FFFFFF	4.08	1.00	21.00	21.00
#000000	5.14	21.00	1.00	1.00
##000000	5.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6483C2

Deuteranopia (green-blind)

#5779BE

Tritanopia (blue-blind)

#1A8C96

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #577ebf;
/* rgb */ color: rgb(87, 126, 191);
/* oklch */ color: oklch(59.3% 0.109 260.2);

Tailwind

colors: {
  custom: {
    50: '#8da3d2',
    500: '#577ebf',
    950: '#000000',
  },
}

SCSS

$custom: #577ebf;
$custom-light: #8da3d2;
$custom-dark: #000000;

JSON

{
  "hex": "#577ebf",
  "rgb": {
    "r": 87,
    "g": 126,
    "b": 191
  },
  "hsl": {
    "h": 217.5,
    "s": 44.828,
    "l": 54.51
  },
  "oklch": {
    "l": 0.59315,
    "c": 0.10935,
    "h": 260.2
  },
  "luminance": 0.2071
}

Semantic roles & 50–950 ramp

primary

#577EBF

secondary

#CFBEA3

accent

#A453D5

background

#F9F9FC

surface

#F1F2F9

border

#CBCCD2

text

#0D0F14

muted

#7E7E82

Preview Lab

Preview with #577EBF

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

Preview Lab → · Contrast checker → · Palette generator →