#587BCB#587BCB

#587BCB is a mid, vivid blue. Relative luminance 0.206; OKLCH L 59.4% C 0.129 H 264.9°. Best body text is #000000 at 5.11:1 contrast (WCAG AA passes).

Color values

HEX	#587BCB
RGB	rgb(88, 123, 203)
HSL	hsl(222, 53%, 57%)
HSV	hsv(222, 57%, 80%)
CMYK	cmyk(56.7%, 39.4%, 0%, 20.4%)
CIE-LAB	lab(52.45, 11.39, -45.31)
CIE-LCH	lch(52.45, 46.72, 284.11°)
OKLab	oklab(59.39% -0.0114 -0.1285)
OKLCH	oklch(59.39% 0.129 264.9)
XYZ	xyz(21.8833, 20.5507, 59.3018)
Luminance	0.2055 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#587BCB #CBA858

analogous

#58B5CB #587BCB #6F58CB

triadic

#587BCB #CB587B #7BCB58

tetradic

#587BCB #CB58B5 #CBA858 #58CB6F

square

#587BCB #CB58B5 #CBA858 #58CB6F

split-complementary

#587BCB #CB6F58 #B5CB58

monochromatic

#284381 #375BAF #587BCB #87A0DA #B5C5E8

Accessibility & contrast

On white

4.11

#587BCB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.11

#587BCB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #587BCB

5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##587BCB	#FFFFFF	#000000	##000000
##587BCB	1.00	4.11	5.11	5.11
#FFFFFF	4.11	1.00	21.00	21.00
#000000	5.11	21.00	1.00	1.00
##000000	5.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5983CE

Deuteranopia (green-blind)

#4B78C9

Tritanopia (blue-blind)

#028D99

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #587bcb;
/* rgb */ color: rgb(88, 123, 203);
/* oklch */ color: oklch(59.4% 0.129 264.9);

Tailwind

colors: {
  custom: {
    50: '#8fa0db',
    500: '#587bcb',
    950: '#000000',
  },
}

SCSS

$custom: #587bcb;
$custom-light: #8fa0db;
$custom-dark: #000000;

JSON

{
  "hex": "#587bcb",
  "rgb": {
    "r": 88,
    "g": 123,
    "b": 203
  },
  "hsl": {
    "h": 221.739,
    "s": 52.511,
    "l": 57.059
  },
  "oklch": {
    "l": 0.59394,
    "c": 0.12904,
    "h": 264.9
  },
  "luminance": 0.20552
}

Semantic roles & 50–950 ramp

primary

#587BCB

secondary

#D7C9A8

accent

#B04CDC

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #587BCB

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

Preview Lab → · Contrast checker → · Palette generator →