#587BBB#587BBB

#587BBB is a mid, moderate blue. Relative luminance 0.198; OKLCH L 58.5% C 0.107 H 261.8°. Best body text is #000000 at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#587BBB
RGB	rgb(88, 123, 187)
HSL	hsl(219, 42%, 54%)
HSV	hsv(219, 53%, 73%)
CMYK	cmyk(52.9%, 34.2%, 0%, 26.7%)
CIE-LAB	lab(51.64, 6.21, -37.44)
CIE-LCH	lch(51.64, 37.95, 279.41°)
OKLab	oklab(58.5% -0.0152 -0.1056)
OKLCH	oklch(58.5% 0.107 261.8)
XYZ	xyz(20.0741, 19.8270, 49.7732)
Luminance	0.1983 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#587BBB #BB9858

analogous

#58ADBB #587BBB #6758BB

triadic

#587BBB #BB587B #7BBB58

tetradic

#587BBB #BB58AD #BB9858 #58BB67

square

#587BBB #BB58AD #BB9858 #58BB67

split-complementary

#587BBB #BB6758 #ADBB58

monochromatic

#2C436C #3E5E98 #587BBB #839DCD #AFC0DE

Accessibility & contrast

On white

4.23

#587BBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.97

#587BBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #587BBB

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##587BBB	#FFFFFF	#000000	##000000
##587BBB	1.00	4.23	4.97	4.97
#FFFFFF	4.23	1.00	21.00	21.00
#000000	4.97	21.00	1.00	1.00
##000000	4.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6280BE

Deuteranopia (green-blind)

#5677BA

Tritanopia (blue-blind)

#258992

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #587bbb;
/* rgb */ color: rgb(88, 123, 187);
/* oklch */ color: oklch(58.5% 0.107 261.8);

Tailwind

colors: {
  custom: {
    50: '#8da0d0',
    500: '#587bbb',
    950: '#000000',
  },
}

SCSS

$custom: #587bbb;
$custom-light: #8da0d0;
$custom-dark: #000000;

JSON

{
  "hex": "#587bbb",
  "rgb": {
    "r": 88,
    "g": 123,
    "b": 187
  },
  "hsl": {
    "h": 218.788,
    "s": 42.128,
    "l": 53.922
  },
  "oklch": {
    "l": 0.58498,
    "c": 0.10668,
    "h": 261.8
  },
  "luminance": 0.19828
}

Semantic roles & 50–950 ramp

primary

#587BBB

secondary

#CDBEA2

accent

#A656D2

background

#F9F9FC

surface

#F1F2F9

border

#CBCCD2

text

#0D0E14

muted

#7E7E82

Preview Lab

Preview with #587BBB

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

Preview Lab → · Contrast checker → · Palette generator →