#518BB5#518BB5

#518BB5 is a mid, moderate cyan. Relative luminance 0.236; OKLCH L 61.4% C 0.088 H 241.6°. Best body text is #000000 at 5.71:1 contrast (WCAG AA passes).

Color values

HEX	#518BB5
RGB	rgb(81, 139, 181)
HSL	hsl(205, 40%, 51%)
HSV	hsv(205, 55%, 71%)
CMYK	cmyk(55.2%, 23.2%, 0%, 29%)
CIE-LAB	lab(55.63, -6.67, -27.80)
CIE-LCH	lch(55.63, 28.59, 256.51°)
OKLab	oklab(61.45% -0.042 -0.0777)
OKLCH	oklch(61.45% 0.088 241.6)
XYZ	xyz(20.9634, 23.5490, 47.1478)
Luminance	0.2355 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#518BB5 #B57B51

analogous

#51B5AD #518BB5 #5159B5

triadic

#518BB5 #B5518B #8BB551

tetradic

#518BB5 #AD51B5 #B57B51 #59B551

square

#518BB5 #AD51B5 #B57B51 #59B551

split-complementary

#518BB5 #B55159 #B5AD51

monochromatic

#2A4A62 #3C6B8D #518BB5 #7CA8C7 #A7C4DA

Accessibility & contrast

On white

3.68

#518BB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.71

#518BB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #518BB5

5.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##518BB5	#FFFFFF	#000000	##000000
##518BB5	1.00	3.68	5.71	5.71
#FFFFFF	3.68	1.00	21.00	21.00
#000000	5.71	21.00	1.00	1.00
##000000	5.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#798BB7

Deuteranopia (green-blind)

#6B81B4

Tritanopia (blue-blind)

#039599

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #518bb5;
/* rgb */ color: rgb(81, 139, 181);
/* oklch */ color: oklch(61.4% 0.088 241.6);

Tailwind

colors: {
  custom: {
    50: '#89accb',
    500: '#518bb5',
    950: '#000000',
  },
}

SCSS

$custom: #518bb5;
$custom-light: #89accb;
$custom-dark: #000000;

JSON

{
  "hex": "#518bb5",
  "rgb": {
    "r": 81,
    "g": 139,
    "b": 181
  },
  "hsl": {
    "h": 205.2,
    "s": 40.323,
    "l": 51.373
  },
  "oklch": {
    "l": 0.61446,
    "c": 0.08836,
    "h": 241.6
  },
  "luminance": 0.23551
}

Semantic roles & 50–950 ramp

primary

#518BB5

secondary

#C7AD9B

accent

#8A58D0

background

#F8FAFC

surface

#F0F4F8

border

#CBCED1

text

#0C1013

muted

#7D7F82

Preview Lab

Preview with #518BB5

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

Preview Lab → · Contrast checker → · Palette generator →