#577DBA#577DBA

#577DBA is a mid, moderate blue. Relative luminance 0.202; OKLCH L 58.8% C 0.104 H 259.5°. Best body text is #000000 at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#577DBA
RGB	rgb(87, 125, 186)
HSL	hsl(217, 42%, 54%)
HSV	hsv(217, 53%, 73%)
CMYK	cmyk(53.2%, 32.8%, 0%, 27.1%)
CIE-LAB	lab(52.10, 4.46, -36.15)
CIE-LCH	lch(52.10, 36.42, 277.03°)
OKLab	oklab(58.83% -0.0188 -0.1018)
OKLCH	oklch(58.83% 0.104 259.5)
XYZ	xyz(20.1240, 20.2371, 49.2906)
Luminance	0.2024 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577DBA #BA9457

analogous

#57AEBA #577DBA #6257BA

triadic

#577DBA #BA577D #7DBA57

tetradic

#577DBA #BA57AE #BA9457 #57BA62

square

#577DBA #BA57AE #BA9457 #57BA62

split-complementary

#577DBA #BA6257 #AEBA57

monochromatic

#2C446B #3E6096 #577DBA #829FCC #AEC0DE

Accessibility & contrast

On white

4.16

#577DBA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.05

#577DBA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577DBA

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577DBA	#FFFFFF	#000000	##000000
##577DBA	1.00	4.16	5.05	5.05
#FFFFFF	4.16	1.00	21.00	21.00
#000000	5.05	21.00	1.00	1.00
##000000	5.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6581BD

Deuteranopia (green-blind)

#5978B9

Tritanopia (blue-blind)

#228A93

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #577dba;
/* rgb */ color: rgb(87, 125, 186);
/* oklch */ color: oklch(58.8% 0.104 259.5);

Tailwind

colors: {
  custom: {
    50: '#8da2cf',
    500: '#577dba',
    950: '#000000',
  },
}

SCSS

$custom: #577dba;
$custom-light: #8da2cf;
$custom-dark: #000000;

JSON

{
  "hex": "#577dba",
  "rgb": {
    "r": 87,
    "g": 125,
    "b": 186
  },
  "hsl": {
    "h": 216.97,
    "s": 41.772,
    "l": 53.529
  },
  "oklch": {
    "l": 0.58828,
    "c": 0.10354,
    "h": 259.5
  },
  "luminance": 0.20239
}

Semantic roles & 50–950 ramp

primary

#577DBA

secondary

#CCBBA1

accent

#A256D2

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0D0F14

muted

#7D7E82

Preview Lab

Preview with #577DBA

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

Preview Lab → · Contrast checker → · Palette generator →