#577FCA#577FCA

#577FCA is a mid, vivid blue. Relative luminance 0.215; OKLCH L 60.1% C 0.123 H 262.1°. Best body text is #000000 at 5.29:1 contrast (WCAG AA passes).

Color values

HEX	#577FCA
RGB	rgb(87, 127, 202)
HSL	hsl(219, 52%, 57%)
HSV	hsv(219, 57%, 79%)
CMYK	cmyk(56.9%, 37.1%, 0%, 20.8%)
CIE-LAB	lab(53.46, 8.43, -43.15)
CIE-LCH	lch(53.46, 43.97, 281.05°)
OKLab	oklab(60.14% -0.017 -0.1222)
OKLCH	oklch(60.14% 0.123 262.1)
XYZ	xyz(22.1769, 21.4675, 58.8406)
Luminance	0.2147 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FCA #CAA257

analogous

#57B9CA #577FCA #6957CA

triadic

#577FCA #CA577F #7FCA57

tetradic

#577FCA #CA57B9 #CAA257 #57CA69

square

#577FCA #CA57B9 #CAA257 #57CA69

split-complementary

#577FCA #CA6957 #B9CA57

monochromatic

#28467F #3760AD #577FCA #86A2D9 #B4C6E7

Accessibility & contrast

On white

3.97

#577FCA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.29

#577FCA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FCA

5.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FCA	#FFFFFF	#000000	##000000
##577FCA	1.00	3.97	5.29	5.29
#FFFFFF	3.97	1.00	21.00	21.00
#000000	5.29	21.00	1.00	1.00
##000000	5.29	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6085CD

Deuteranopia (green-blind)

#517BC8

Tritanopia (blue-blind)

#00909B

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #577fca;
/* rgb */ color: rgb(87, 127, 202);
/* oklch */ color: oklch(60.1% 0.123 262.1);

Tailwind

colors: {
  custom: {
    50: '#8fa3da',
    500: '#577fca',
    950: '#000000',
  },
}

SCSS

$custom: #577fca;
$custom-light: #8fa3da;
$custom-dark: #000000;

JSON

{
  "hex": "#577fca",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 202
  },
  "hsl": {
    "h": 219.13,
    "s": 52.036,
    "l": 56.667
  },
  "oklch": {
    "l": 0.60139,
    "c": 0.12339,
    "h": 262.1
  },
  "luminance": 0.21469
}

Semantic roles & 50–950 ramp

primary

#577FCA

secondary

#D6C6A7

accent

#AA4CDB

background

#F9FAFD

surface

#F1F3FB

border

#CBCDD4

text

#0D0F15

muted

#7E7F83

Preview Lab

Preview with #577FCA

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

Preview Lab → · Contrast checker → · Palette generator →