#577DB7#577DB7

#577DB7 is a mid, moderate blue. Relative luminance 0.201; OKLCH L 58.7% C 0.099 H 258.6°. Best body text is #000000 at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#577DB7
RGB	rgb(87, 125, 183)
HSL	hsl(216, 40%, 53%)
HSV	hsv(216, 52%, 72%)
CMYK	cmyk(52.5%, 31.7%, 0%, 28.2%)
CIE-LAB	lab(51.96, 3.50, -34.64)
CIE-LCH	lch(51.96, 34.82, 275.77°)
OKLab	oklab(58.67% -0.0196 -0.0975)
OKLCH	oklch(58.67% 0.099 258.6)
XYZ	xyz(19.8084, 20.1109, 47.6285)
Luminance	0.2011 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577DB7 #B79157

analogous

#57ADB7 #577DB7 #6157B7

triadic

#577DB7 #B7577D #7DB757

tetradic

#577DB7 #B757AD #B79157 #57B761

square

#577DB7 #B757AD #B79157 #57B761

split-complementary

#577DB7 #B76157 #ADB757

monochromatic

#2C4467 #3F6092 #577DB7 #829EC9 #ADBFDC

Accessibility & contrast

On white

4.18

#577DB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.02

#577DB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577DB7

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577DB7	#FFFFFF	#000000	##000000
##577DB7	1.00	4.18	5.02	5.02
#FFFFFF	4.18	1.00	21.00	21.00
#000000	5.02	21.00	1.00	1.00
##000000	5.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6681B9

Deuteranopia (green-blind)

#5B78B6

Tritanopia (blue-blind)

#268A92

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #577db7;
/* rgb */ color: rgb(87, 125, 183);
/* oklch */ color: oklch(58.7% 0.099 258.6);

Tailwind

colors: {
  custom: {
    50: '#8ca2cd',
    500: '#577db7',
    950: '#000000',
  },
}

SCSS

$custom: #577db7;
$custom-light: #8ca2cd;
$custom-dark: #000000;

JSON

{
  "hex": "#577db7",
  "rgb": {
    "r": 87,
    "g": 125,
    "b": 183
  },
  "hsl": {
    "h": 216.25,
    "s": 40,
    "l": 52.941
  },
  "oklch": {
    "l": 0.58671,
    "c": 0.09942,
    "h": 258.6
  },
  "luminance": 0.20112
}

Semantic roles & 50–950 ramp

primary

#577DB7

secondary

#CAB9A0

accent

#A058D0

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0D0F13

muted

#7D7E82

Preview Lab

Preview with #577DB7

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

Preview Lab → · Contrast checker → · Palette generator →