#5178D2#5178D2

#5178D2 is a mid, vivid blue. Relative luminance 0.198; OKLCH L 58.8% C 0.145 H 264.7°. Best body text is #000000 at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#5178D2
RGB	rgb(81, 120, 210)
HSL	hsl(222, 59%, 57%)
HSV	hsv(222, 61%, 82%)
CMYK	cmyk(61.4%, 42.9%, 0%, 17.6%)
CIE-LAB	lab(51.65, 14.19, -50.59)
CIE-LCH	lch(51.65, 52.54, 285.67°)
OKLab	oklab(58.8% -0.0134 -0.1442)
OKLCH	oklch(58.8% 0.145 264.7)
XYZ	xyz(21.7387, 19.8335, 63.6429)
Luminance	0.1983 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5178D2 #D2AB51

analogous

#51B9D2 #5178D2 #6A51D2

triadic

#5178D2 #D25178 #78D251

tetradic

#5178D2 #D251B9 #D2AB51 #51D26A

square

#5178D2 #D251B9 #D2AB51 #51D26A

split-complementary

#5178D2 #D26A51 #B9D251

monochromatic

#234186 #2F58B7 #5178D2 #829EDF #B2C3EB

Accessibility & contrast

On white

4.23

#5178D2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.97

#5178D2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5178D2

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5178D2	#FFFFFF	#000000	##000000
##5178D2	1.00	4.23	4.97	4.97
#FFFFFF	4.23	1.00	21.00	21.00
#000000	4.97	21.00	1.00	1.00
##000000	4.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F81D5

Deuteranopia (green-blind)

#3C76D0

Tritanopia (blue-blind)

#008C9B

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #5178d2;
/* rgb */ color: rgb(81, 120, 210);
/* oklch */ color: oklch(58.8% 0.145 264.7);

Tailwind

colors: {
  custom: {
    50: '#8d9ee0',
    500: '#5178d2',
    950: '#000000',
  },
}

SCSS

$custom: #5178d2;
$custom-light: #8d9ee0;
$custom-dark: #000000;

JSON

{
  "hex": "#5178d2",
  "rgb": {
    "r": 81,
    "g": 120,
    "b": 210
  },
  "hsl": {
    "h": 221.86,
    "s": 58.904,
    "l": 57.059
  },
  "oklch": {
    "l": 0.58799,
    "c": 0.1448,
    "h": 264.7
  },
  "luminance": 0.19835
}

Semantic roles & 50–950 ramp

primary

#5178D2

secondary

#DACAA5

accent

#B346E2

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #5178D2

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

Preview Lab → · Contrast checker → · Palette generator →