#5181BF#5181BF

#5181BF is a mid, moderate cyan. Relative luminance 0.212; OKLCH L 59.7% C 0.109 H 255.4°. Best body text is #000000 at 5.24:1 contrast (WCAG AA passes).

Color values

HEX	#5181BF
RGB	rgb(81, 129, 191)
HSL	hsl(214, 46%, 53%)
HSV	hsv(214, 58%, 75%)
CMYK	cmyk(57.6%, 32.5%, 0%, 25.1%)
CIE-LAB	lab(53.18, 2.37, -37.34)
CIE-LCH	lch(53.18, 37.42, 273.63°)
OKLab	oklab(59.66% -0.0274 -0.1054)
OKLCH	oklch(59.66% 0.109 255.4)
XYZ	xyz(20.6442, 21.2097, 52.2861)
Luminance	0.2121 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5181BF #BF8F51

analogous

#51B8BF #5181BF #5851BF

triadic

#5181BF #BF5181 #81BF51

tetradic

#5181BF #BF51B8 #BF8F51 #51BF58

square

#5181BF #BF51B8 #BF8F51 #51BF58

split-complementary

#5181BF #BF5851 #B8BF51

monochromatic

#28466D #39639A #5181BF #7EA1CF #AAC2E0

Accessibility & contrast

On white

4.01

#5181BF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.24

#5181BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5181BF

5.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5181BF	#FFFFFF	#000000	##000000
##5181BF	1.00	4.01	5.24	5.24
#FFFFFF	4.01	1.00	21.00	21.00
#000000	5.24	21.00	1.00	1.00
##000000	5.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6785C2

Deuteranopia (green-blind)

#597ABE

Tritanopia (blue-blind)

#008F97

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #5181bf;
/* rgb */ color: rgb(81, 129, 191);
/* oklch */ color: oklch(59.7% 0.109 255.4);

Tailwind

colors: {
  custom: {
    50: '#8aa5d2',
    500: '#5181bf',
    950: '#000000',
  },
}

SCSS

$custom: #5181bf;
$custom-light: #8aa5d2;
$custom-dark: #000000;

JSON

{
  "hex": "#5181bf",
  "rgb": {
    "r": 81,
    "g": 129,
    "b": 191
  },
  "hsl": {
    "h": 213.818,
    "s": 46.218,
    "l": 53.333
  },
  "oklch": {
    "l": 0.59662,
    "c": 0.10889,
    "h": 255.4
  },
  "luminance": 0.21211
}

Semantic roles & 50–950 ramp

primary

#5181BF

secondary

#CEB99E

accent

#9C52D6

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C0F14

muted

#7D7F82

Preview Lab

Preview with #5181BF

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

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