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Disciplined Robe Lagoon

#05b4d1
Notes

Disciplined Robe Lagoon (#05B4D1) is a true cyan with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (189°, 95%, 42%) 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
#05b4d1
RGB
rgb(5, 180, 209)
HSL
hsl(189, 95%, 42%)
HWB
hwb(189 2% 18%)
OKLCH
oklch(70.9% 0.124 214.8)
HSV
hsv(189, 98%, 82%)
LAB
lab(67.48% -27.59 -25.36)
LCH
lch(67.48% 37.47 222.58)
CMYK
cmyk(98%, 14%, 0%, 18%)

Etymology

Disciplined
adjective

Latin disciplīna, teaching / training — past-participle of discipline. As a color modifier, disciplined implies a clear-and-controlled-and-careful quality where the hue carries the visual register of careful-edited-and-restrained design-decision. Sits at the crisp-and-orderly end of the grid, parallel to methodical and orderly in usage.

Robe
modifier

Old French robe, long-flowing-garment. As a color modifier, robe implies a long-flowing-and-academic-and-judicial quality, the visual register of Oxford-Cambridge-academic-and-judicial-robe hand-long-flowing-and-academic-and-judicial Oxford-Cambridge-academic-and-judicial-robe-and-monastic-habit robe-and-long-flowing-and-academic surfaces under Oxford-Cambridge-academic-and-judicial-robe-and-monastic-habit Senate-and-Inns-of-Court-and-cathedral-cloister Trinity-Senior-Common-Room-light. Sits at the modifier-and-textile end of the grid, parallel to gown and cope in usage.

Lagoon
noun

A shallow body of saltwater partially or fully enclosed by a barrier — coral atoll lagoons in the Pacific, Venice's Laguna Veneta, the Florida Keys' backcountry. The color refers to the average reflectance of a calm tropical lagoon at midday: a saturated, slightly muted blue-green with the optical clarity of shallow water over white sand. Brighter than reef, cooler than aquamarine, with the postcard weight of a Pacific atoll seen from above.

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

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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.

#05b4d1
Original
#a0aed3
Protanopia
#889dd1
Deuteranopia
#00bfbd
Tritanopia
#919191
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
2.48:1
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
8.46:1

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