#577DBD#577DBD

#577DBD is a mid, moderate blue. Relative luminance 0.204; OKLCH L 59.0% C 0.108 H 260.4°. Best body text is #000000 at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#577DBD
RGB	rgb(87, 125, 189)
HSL	hsl(218, 44%, 54%)
HSV	hsv(218, 54%, 74%)
CMYK	cmyk(54%, 33.9%, 0%, 25.9%)
CIE-LAB	lab(52.25, 5.42, -37.64)
CIE-LCH	lch(52.25, 38.03, 278.19°)
OKLab	oklab(58.99% -0.018 -0.1062)
OKLCH	oklch(58.99% 0.108 260.4)
XYZ	xyz(20.4463, 20.3660, 50.9878)
Luminance	0.2037 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577DBD #BD9757

analogous

#57B0BD #577DBD #6457BD

triadic

#577DBD #BD577D #7DBD57

tetradic

#577DBD #BD57B0 #BD9757 #57BD64

square

#577DBD #BD57B0 #BD9757 #57BD64

split-complementary

#577DBD #BD6457 #B0BD57

monochromatic

#2B446E #3D5F9A #577DBD #839FCE #AFC1E0

Accessibility & contrast

On white

4.14

#577DBD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.07

#577DBD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577DBD

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577DBD	#FFFFFF	#000000	##000000
##577DBD	1.00	4.14	5.07	5.07
#FFFFFF	4.14	1.00	21.00	21.00
#000000	5.07	21.00	1.00	1.00
##000000	5.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6482C0

Deuteranopia (green-blind)

#5778BC

Tritanopia (blue-blind)

#1E8B94

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #577dbd;
/* rgb */ color: rgb(87, 125, 189);
/* oklch */ color: oklch(59.0% 0.108 260.4);

Tailwind

colors: {
  custom: {
    50: '#8da2d1',
    500: '#577dbd',
    950: '#000000',
  },
}

SCSS

$custom: #577dbd;
$custom-light: #8da2d1;
$custom-dark: #000000;

JSON

{
  "hex": "#577dbd",
  "rgb": {
    "r": 87,
    "g": 125,
    "b": 189
  },
  "hsl": {
    "h": 217.647,
    "s": 43.59,
    "l": 54.118
  },
  "oklch": {
    "l": 0.58988,
    "c": 0.10768,
    "h": 260.4
  },
  "luminance": 0.20368
}

Semantic roles & 50–950 ramp

primary

#577DBD

secondary

#CEBDA2

accent

#A454D3

background

#F9F9FC

surface

#F1F2F9

border

#CBCCD2

text

#0D0F14

muted

#7E7E82

Preview Lab

Preview with #577DBD

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

Preview Lab → · Contrast checker → · Palette generator →