#577DCF#577DCF

#577DCF is a mid, vivid blue. Relative luminance 0.212; OKLCH L 60.0% C 0.133 H 264.1°. Best body text is #000000 at 5.24:1 contrast (WCAG AA passes).

Color values

HEX	#577DCF
RGB	rgb(87, 125, 207)
HSL	hsl(221, 56%, 58%)
HSV	hsv(221, 58%, 81%)
CMYK	cmyk(58%, 39.6%, 0%, 18.8%)
CIE-LAB	lab(53.16, 11.29, -46.45)
CIE-LCH	lch(53.16, 47.81, 283.66°)
OKLab	oklab(60% -0.0137 -0.1319)
OKLCH	oklch(60% 0.133 264.1)
XYZ	xyz(22.5227, 21.1966, 61.9239)
Luminance	0.2120 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577DCF #CFA957

analogous

#57B9CF #577DCF #6D57CF

triadic

#577DCF #CF577D #7DCF57

tetradic

#577DCF #CF57B9 #CFA957 #57CF6D

square

#577DCF #CF57B9 #CFA957 #57CF6D

split-complementary

#577DCF #CF6D57 #B9CF57

monochromatic

#264485 #345DB5 #577DCF #87A2DD #B6C7EA

Accessibility & contrast

On white

4.01

#577DCF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.24

#577DCF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577DCF

5.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577DCF	#FFFFFF	#000000	##000000
##577DCF	1.00	4.01	5.24	5.24
#FFFFFF	4.01	1.00	21.00	21.00
#000000	5.24	21.00	1.00	1.00
##000000	5.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A85D2

Deuteranopia (green-blind)

#4A7ACD

Tritanopia (blue-blind)

#008F9C

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #577dcf;
/* rgb */ color: rgb(87, 125, 207);
/* oklch */ color: oklch(60.0% 0.133 264.1);

Tailwind

colors: {
  custom: {
    50: '#8fa2de',
    500: '#577dcf',
    950: '#000000',
  },
}

SCSS

$custom: #577dcf;
$custom-light: #8fa2de;
$custom-dark: #000000;

JSON

{
  "hex": "#577dcf",
  "rgb": {
    "r": 87,
    "g": 125,
    "b": 207
  },
  "hsl": {
    "h": 221,
    "s": 55.556,
    "l": 57.647
  },
  "oklch": {
    "l": 0.59997,
    "c": 0.1326,
    "h": 264.1
  },
  "luminance": 0.21198
}

Semantic roles & 50–950 ramp

primary

#577DCF

secondary

#D9CAA9

accent

#AF49DF

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0F15

muted

#7E7E83

Preview Lab

Preview with #577DCF

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

Preview Lab → · Contrast checker → · Palette generator →