#587BC9#587BC9

#587BC9 is a mid, vivid blue. Relative luminance 0.205; OKLCH L 59.3% C 0.126 H 264.6°. Best body text is #000000 at 5.09:1 contrast (WCAG AA passes).

Color values

HEX	#587BC9
RGB	rgb(88, 123, 201)
HSL	hsl(221, 51%, 57%)
HSV	hsv(221, 56%, 79%)
CMYK	cmyk(56.2%, 38.8%, 0%, 21.2%)
CIE-LAB	lab(52.35, 10.73, -44.33)
CIE-LCH	lch(52.35, 45.62, 283.61°)
OKLab	oklab(59.28% -0.0119 -0.1257)
OKLCH	oklch(59.28% 0.126 264.6)
XYZ	xyz(21.6465, 20.4560, 58.0547)
Luminance	0.2046 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#587BC9 #C9A658

analogous

#58B4C9 #587BC9 #6E58C9

triadic

#587BC9 #C9587B #7BC958

tetradic

#587BC9 #C958B4 #C9A658 #58C96E

square

#587BC9 #C958B4 #C9A658 #58C96E

split-complementary

#587BC9 #C96E58 #B4C958

monochromatic

#29437E #385CAC #587BC9 #86A0D8 #B4C4E7

Accessibility & contrast

On white

4.12

#587BC9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.09

#587BC9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #587BC9

5.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##587BC9	#FFFFFF	#000000	##000000
##587BC9	1.00	4.12	5.09	5.09
#FFFFFF	4.12	1.00	21.00	21.00
#000000	5.09	21.00	1.00	1.00
##000000	5.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B82CC

Deuteranopia (green-blind)

#4C78C7

Tritanopia (blue-blind)

#0A8C98

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #587bc9;
/* rgb */ color: rgb(88, 123, 201);
/* oklch */ color: oklch(59.3% 0.126 264.6);

Tailwind

colors: {
  custom: {
    50: '#8fa0da',
    500: '#587bc9',
    950: '#000000',
  },
}

SCSS

$custom: #587bc9;
$custom-light: #8fa0da;
$custom-dark: #000000;

JSON

{
  "hex": "#587bc9",
  "rgb": {
    "r": 88,
    "g": 123,
    "b": 201
  },
  "hsl": {
    "h": 221.416,
    "s": 51.131,
    "l": 56.667
  },
  "oklch": {
    "l": 0.59278,
    "c": 0.12625,
    "h": 264.6
  },
  "luminance": 0.20458
}

Semantic roles & 50–950 ramp

primary

#587BC9

secondary

#D6C7A7

accent

#AF4DDB

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #587BC9

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

Preview Lab → · Contrast checker → · Palette generator →