#5B8FDB#5B8FDB

#5B8FDB is a light, vivid blue. Relative luminance 0.270; OKLCH L 64.7% C 0.127 H 257.8°. Best body text is #000000 at 6.40:1 contrast (WCAG AA passes).

Color values

HEX	#5B8FDB
RGB	rgb(91, 143, 219)
HSL	hsl(216, 64%, 61%)
HSV	hsv(216, 58%, 86%)
CMYK	cmyk(58.4%, 34.7%, 0%, 14.1%)
CIE-LAB	lab(58.96, 5.26, -44.03)
CIE-LCH	lch(58.96, 44.34, 276.82°)
OKLab	oklab(64.75% -0.0269 -0.1246)
OKLCH	oklch(64.75% 0.127 257.8)
XYZ	xyz(26.9185, 26.9812, 70.7934)
Luminance	0.2698 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B8FDB #DBA75B

analogous

#5BCFDB #5B8FDB #675BDB

triadic

#5B8FDB #DB5B8F #8FDB5B

tetradic

#5B8FDB #DB5BCF #DBA75B #5BDB67

square

#5B8FDB #DB5BCF #DBA75B #5BDB67

split-complementary

#5B8FDB #DB675B #CFDB5B

monochromatic

#22539A #2D6DCC #5B8FDB #8DB1E6 #BFD4F1

Accessibility & contrast

On white

3.28

#5B8FDB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.40

#5B8FDB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B8FDB

6.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B8FDB	#FFFFFF	#000000	##000000
##5B8FDB	1.00	3.28	6.40	6.40
#FFFFFF	3.28	1.00	21.00	21.00
#000000	6.40	21.00	1.00	1.00
##000000	6.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F94DE

Deuteranopia (green-blind)

#5F88D9

Tritanopia (blue-blind)

#00A0AB

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #5b8fdb;
/* rgb */ color: rgb(91, 143, 219);
/* oklch */ color: oklch(64.7% 0.127 257.8);

Tailwind

colors: {
  custom: {
    50: '#93afe6',
    500: '#5b8fdb',
    950: '#000000',
  },
}

SCSS

$custom: #5b8fdb;
$custom-light: #93afe6;
$custom-dark: #000000;

JSON

{
  "hex": "#5b8fdb",
  "rgb": {
    "r": 91,
    "g": 143,
    "b": 219
  },
  "hsl": {
    "h": 215.625,
    "s": 64,
    "l": 60.784
  },
  "oklch": {
    "l": 0.64746,
    "c": 0.12743,
    "h": 257.8
  },
  "luminance": 0.26984
}

Semantic roles & 50–950 ramp

primary

#5B8FDB

secondary

#E1CDB1

accent

#831ACC

background

#F9FAFE

surface

#F2F4FC

border

#CCCED5

text

#0E1016

muted

#7E7F84

Preview Lab

Preview with #5B8FDB

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

Preview Lab → · Contrast checker → · Palette generator →