#5178DB#5178DB

#5178DB is a mid, vivid blue. Relative luminance 0.203; OKLCH L 59.4% C 0.157 H 265.7°. Best body text is #000000 at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#5178DB
RGB	rgb(81, 120, 219)
HSL	hsl(223, 66%, 59%)
HSV	hsv(223, 63%, 86%)
CMYK	cmyk(63%, 45.2%, 0%, 14.1%)
CIE-LAB	lab(52.17, 17.26, -54.85)
CIE-LCH	lch(52.17, 57.50, 287.47°)
OKLab	oklab(59.37% -0.0119 -0.1567)
OKLCH	oklch(59.37% 0.157 265.7)
XYZ	xyz(22.8916, 20.2947, 69.7150)
Luminance	0.2030 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5178DB #DBB451

analogous

#51BDDB #5178DB #6F51DB

triadic

#5178DB #DB5178 #78DB51

tetradic

#5178DB #DB51BD #DBB451 #51DB6F

square

#5178DB #DB51BD #DBB451 #51DB6F

split-complementary

#5178DB #DB6F51 #BDDB51

monochromatic

#1E3F93 #2955C6 #5178DB #849FE5 #B6C7F0

Accessibility & contrast

On white

4.15

#5178DB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.06

#5178DB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5178DB

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5178DB	#FFFFFF	#000000	##000000
##5178DB	1.00	4.15	5.06	5.06
#FFFFFF	4.15	1.00	21.00	21.00
#000000	5.06	21.00	1.00	1.00
##000000	5.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4883DF

Deuteranopia (green-blind)

#3177D9

Tritanopia (blue-blind)

#008F9F

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #5178db;
/* rgb */ color: rgb(81, 120, 219);
/* oklch */ color: oklch(59.4% 0.157 265.7);

Tailwind

colors: {
  custom: {
    50: '#8e9ee7',
    500: '#5178db',
    950: '#000000',
  },
}

SCSS

$custom: #5178db;
$custom-light: #8e9ee7;
$custom-dark: #000000;

JSON

{
  "hex": "#5178db",
  "rgb": {
    "r": 81,
    "g": 120,
    "b": 219
  },
  "hsl": {
    "h": 223.043,
    "s": 65.714,
    "l": 58.824
  },
  "oklch": {
    "l": 0.59367,
    "c": 0.15714,
    "h": 265.7
  },
  "luminance": 0.20297
}

Semantic roles & 50–950 ramp

primary

#5178DB

secondary

#DFD0A9

accent

#B93FE9

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #5178DB

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

Preview Lab → · Contrast checker → · Palette generator →