#577FB5#577FB5

#577FB5 is a mid, moderate cyan. Relative luminance 0.205; OKLCH L 59.0% C 0.095 H 256.2°. Best body text is #000000 at 5.11:1 contrast (WCAG AA passes).

Color values

HEX	#577FB5
RGB	rgb(87, 127, 181)
HSL	hsl(214, 39%, 53%)
HSV	hsv(214, 52%, 71%)
CMYK	cmyk(51.9%, 29.8%, 0%, 29%)
CIE-LAB	lab(52.44, 1.68, -32.74)
CIE-LCH	lch(52.44, 32.79, 272.93°)
OKLab	oklab(59.01% -0.0226 -0.0919)
OKLCH	oklch(59.01% 0.095 256.2)
XYZ	xyz(19.8575, 20.5397, 46.6253)
Luminance	0.2054 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FB5 #B58D57

analogous

#57AEB5 #577FB5 #5E57B5

triadic

#577FB5 #B5577F #7FB557

tetradic

#577FB5 #B557AE #B58D57 #57B55E

square

#577FB5 #B557AE #B58D57 #57B55E

split-complementary

#577FB5 #B55E57 #AEB557

monochromatic

#2D4565 #3F6190 #577FB5 #819FC8 #ACC0DA

Accessibility & contrast

On white

4.11

#577FB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.11

#577FB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FB5

5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FB5	#FFFFFF	#000000	##000000
##577FB5	1.00	4.11	5.11	5.11
#FFFFFF	4.11	1.00	21.00	21.00
#000000	5.11	21.00	1.00	1.00
##000000	5.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A82B7

Deuteranopia (green-blind)

#5E79B4

Tritanopia (blue-blind)

#288B92

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #577fb5;
/* rgb */ color: rgb(87, 127, 181);
/* oklch */ color: oklch(59.0% 0.095 256.2);

Tailwind

colors: {
  custom: {
    50: '#8ca3cb',
    500: '#577fb5',
    950: '#000000',
  },
}

SCSS

$custom: #577fb5;
$custom-light: #8ca3cb;
$custom-dark: #000000;

JSON

{
  "hex": "#577fb5",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 181
  },
  "hsl": {
    "h": 214.468,
    "s": 38.843,
    "l": 52.549
  },
  "oklch": {
    "l": 0.59015,
    "c": 0.09468,
    "h": 256.2
  },
  "luminance": 0.20541
}

Semantic roles & 50–950 ramp

primary

#577FB5

secondary

#C8B79F

accent

#9D59CF

background

#F8FAFC

surface

#F0F3F8

border

#CBCDD1

text

#0C0F13

muted

#7D7F82

Preview Lab

Preview with #577FB5

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

Preview Lab → · Contrast checker → · Palette generator →