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Genuine Hoar Kingfisher

#05a5b1
Notes

Genuine Hoar Kingfisher (#05A5B1) is a true cyan with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (184°, 95%, 36%) places it in the highly saturated band at a mid lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. For a confident two-color system, pair it with its complementary red. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#05a5b1
RGB
rgb(5, 165, 177)
HSL
hsl(184, 95%, 36%)
HWB
hwb(184 2% 31%)
OKLCH
oklch(65.8% 0.112 204.0)
HSV
hsv(184, 97%, 69%)
LAB
lab(61.75% -30.73 -16.31)
LCH
lch(61.75% 34.78 207.96)
CMYK
cmyk(97%, 7%, 0%, 31%)

Etymology

Genuine
adjective

Latin genuinus, natural, innate — used as a color modifier since the sixteenth century for hues that read as authentic rather than imitated. Genuine indigo, genuine ochre: moderate-to-high saturation combined with the optical impression of a hue from real pigment rather than synthetic dye. Sits at the crisp-bucket alongside true and honest.

Hoar
modifier

Old English hār, grey-with-age-or-hoar-frost. As a color modifier, hoar implies a grey-aged-and-hoar-frosted quality, the visual register of English-meadow-and-hedgerow-hoar hand-grey-aged-and-hoar-frosted English-meadow-and-hedgerow-hoar-and-frosted-pasture hoar-and-grey-aged-and-hoar-frosted surfaces under English-meadow-and-hedgerow-hoar-and-frosted-pasture Cotswold-and-Yorkshire-Dales-frost-pasture frosted-meadow-light. Sits at the modifier-and-weather end of the grid, parallel to rime and sleet in usage.

Kingfisher
noun

The family Alcedinidae — particularly Alcedo atthis, the European common kingfisher whose iridescent turquoise-blue plumage gives the color its name. The color refers to a male European kingfisher's wing: a saturated, slightly cool deep blue-green with the iridescent satin finish of structurally colored feathers.

Closest matches

The nearest named color in three reference sources, ranked by perceptual distance (ΔE76 in CIELAB). ΔE < 1 is imperceptible to most viewers; ΔE > 10 is clearly different. When two sources point to the same hex they’re merged into one tile; click any to open that color’s page.

Variations

Click any swatch to explore

Harmonies

Accessibility

Color-vision simulation

How this color appears to viewers with the four major color-vision-deficiency types. Computed via the Machado (2009) physiologically-based model. If a tile matches the original, the color reads the same to that viewer.

#05a5b1
Original
#969eb2
Protanopia
#828fb1
Deuteranopia
#00aca8
Tritanopia
#848484
Achromatopsia
WCAG contrast

The color used as foreground text against pure white and pure black, with the contrast ratio and WCAG 2.1 grade. Aim for AA (4.5:1) for body text and AA Large (3:1) for 18 pt+ headlines; AAA (7:1) is the gold standard for long-form reading surfaces.

The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon White
2.99:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAAon Black
7.02:1

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