#5178BC#5178BC

#5178BC is a mid, moderate blue. Relative luminance 0.188; OKLCH L 57.5% C 0.114 H 260.9°. Best body text is #000000 at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#5178BC
RGB	rgb(81, 120, 188)
HSL	hsl(218, 44%, 53%)
HSV	hsv(218, 57%, 74%)
CMYK	cmyk(56.9%, 36.2%, 0%, 26.3%)
CIE-LAB	lab(50.47, 6.80, -39.90)
CIE-LCH	lch(50.47, 40.47, 279.68°)
OKLab	oklab(57.5% -0.0181 -0.1129)
OKLCH	oklch(57.5% 0.114 260.9)
XYZ	xyz(19.1838, 18.8116, 50.1873)
Luminance	0.1881 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5178BC #BC9551

analogous

#51ADBC #5178BC #6051BC

triadic

#5178BC #BC5178 #78BC51

tetradic

#5178BC #BC51AD #BC9551 #51BC60

square

#5178BC #BC51AD #BC9551 #51BC60

split-complementary

#5178BC #BC6051 #ADBC51

monochromatic

#29406A #3A5B96 #5178BC #7D9ACD #A9BDDE

Accessibility & contrast

On white

4.41

#5178BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.76

#5178BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5178BC

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5178BC	#FFFFFF	#000000	##000000
##5178BC	1.00	4.41	4.76	4.76
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.76	21.00	1.00	1.00
##000000	4.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C7EBF

Deuteranopia (green-blind)

#4F74BB

Tritanopia (blue-blind)

#008791

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #5178bc;
/* rgb */ color: rgb(81, 120, 188);
/* oklch */ color: oklch(57.5% 0.114 260.9);

Tailwind

colors: {
  custom: {
    50: '#8a9ed0',
    500: '#5178bc',
    950: '#000000',
  },
}

SCSS

$custom: #5178bc;
$custom-light: #8a9ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#5178bc",
  "rgb": {
    "r": 81,
    "g": 120,
    "b": 188
  },
  "hsl": {
    "h": 218.131,
    "s": 44.398,
    "l": 52.745
  },
  "oklch": {
    "l": 0.575,
    "c": 0.11432,
    "h": 260.9
  },
  "luminance": 0.18813
}

Semantic roles & 50–950 ramp

primary

#5178BC

secondary

#CCBB9D

accent

#A554D4

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #5178BC

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

Preview Lab → · Contrast checker → · Palette generator →