#5178BD#5178BD

#5178BD is a mid, moderate blue. Relative luminance 0.189; OKLCH L 57.6% C 0.116 H 261.1°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#5178BD
RGB	rgb(81, 120, 189)
HSL	hsl(218, 45%, 53%)
HSV	hsv(218, 57%, 74%)
CMYK	cmyk(57.1%, 36.5%, 0%, 25.9%)
CIE-LAB	lab(50.52, 7.13, -40.39)
CIE-LCH	lch(50.52, 41.02, 280.01°)
OKLab	oklab(57.56% -0.0178 -0.1143)
OKLCH	oklch(57.56% 0.116 261.1)
XYZ	xyz(19.2920, 18.8548, 50.7570)
Luminance	0.1886 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5178BD #BD9651

analogous

#51AEBD #5178BD #6051BD

triadic

#5178BD #BD5178 #78BD51

tetradic

#5178BD #BD51AE #BD9651 #51BD60

square

#5178BD #BD51AE #BD9651 #51BD60

split-complementary

#5178BD #BD6051 #AEBD51

monochromatic

#29416B #395B97 #5178BD #7D9ACE #AABDDF

Accessibility & contrast

On white

4.40

#5178BD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#5178BD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5178BD

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5178BD	#FFFFFF	#000000	##000000
##5178BD	1.00	4.40	4.77	4.77
#FFFFFF	4.40	1.00	21.00	21.00
#000000	4.77	21.00	1.00	1.00
##000000	4.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C7EC0

Deuteranopia (green-blind)

#4E74BC

Tritanopia (blue-blind)

#008791

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #5178bd;
/* rgb */ color: rgb(81, 120, 189);
/* oklch */ color: oklch(57.6% 0.116 261.1);

Tailwind

colors: {
  custom: {
    50: '#8a9ed1',
    500: '#5178bd',
    950: '#000000',
  },
}

SCSS

$custom: #5178bd;
$custom-light: #8a9ed1;
$custom-dark: #000000;

JSON

{
  "hex": "#5178bd",
  "rgb": {
    "r": 81,
    "g": 120,
    "b": 189
  },
  "hsl": {
    "h": 218.333,
    "s": 45,
    "l": 52.941
  },
  "oklch": {
    "l": 0.57556,
    "c": 0.1157,
    "h": 261.1
  },
  "luminance": 0.18856
}

Semantic roles & 50–950 ramp

primary

#5178BD

secondary

#CCBB9E

accent

#A653D5

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #5178BD

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

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