#587CCB#587CCB

#587CCB is a mid, vivid blue. Relative luminance 0.208; OKLCH L 59.6% C 0.128 H 264.4°. Best body text is #000000 at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#587CCB
RGB	rgb(88, 124, 203)
HSL	hsl(221, 53%, 57%)
HSV	hsv(221, 57%, 80%)
CMYK	cmyk(56.7%, 38.9%, 0%, 20.4%)
CIE-LAB	lab(52.73, 10.78, -44.87)
CIE-LCH	lch(52.73, 46.15, 283.51°)
OKLab	oklab(59.61% -0.0126 -0.1272)
OKLCH	oklch(59.61% 0.128 264.4)
XYZ	xyz(22.0080, 20.8001, 59.3434)
Luminance	0.2080 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#587CCB #CBA758

analogous

#58B6CB #587CCB #6E58CB

triadic

#587CCB #CB587C #7CCB58

tetradic

#587CCB #CB58B6 #CBA758 #58CB6E

square

#587CCB #CB58B6 #CBA758 #58CB6E

split-complementary

#587CCB #CB6E58 #B6CB58

monochromatic

#284481 #375CAF #587CCB #87A1DA #B5C5E8

Accessibility & contrast

On white

4.07

#587CCB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.16

#587CCB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #587CCB

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##587CCB	#FFFFFF	#000000	##000000
##587CCB	1.00	4.07	5.16	5.16
#FFFFFF	4.07	1.00	21.00	21.00
#000000	5.16	21.00	1.00	1.00
##000000	5.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B84CE

Deuteranopia (green-blind)

#4C79C9

Tritanopia (blue-blind)

#018D9A

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #587ccb;
/* rgb */ color: rgb(88, 124, 203);
/* oklch */ color: oklch(59.6% 0.128 264.4);

Tailwind

colors: {
  custom: {
    50: '#8fa1db',
    500: '#587ccb',
    950: '#000000',
  },
}

SCSS

$custom: #587ccb;
$custom-light: #8fa1db;
$custom-dark: #000000;

JSON

{
  "hex": "#587ccb",
  "rgb": {
    "r": 88,
    "g": 124,
    "b": 203
  },
  "hsl": {
    "h": 221.217,
    "s": 52.511,
    "l": 57.059
  },
  "oklch": {
    "l": 0.59607,
    "c": 0.12786,
    "h": 264.4
  },
  "luminance": 0.20802
}

Semantic roles & 50–950 ramp

primary

#587CCB

secondary

#D7C8A8

accent

#AF4CDC

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #587CCB

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

Preview Lab → · Contrast checker → · Palette generator →