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Serviceable Kona

#c9efcb
Notes

Serviceable Kona (#C9EFCB) is a soft green with a pastel character. It reads calm and airy, with enough chroma to feel intentional rather than washed out. Its HSL profile (123°, 54%, 86%) places it in the balanced band at a light lightness. It works as a background wash, large-area fill, or soft illustration tone. Add a darker ink of the same hue when you need type over it. For a confident two-color system, pair it with its complementary violet. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#c9efcb
RGB
rgb(201, 239, 203)
HSL
hsl(123, 54%, 86%)
HWB
hwb(123 79% 6%)
OKLCH
oklch(91.5% 0.063 146.5)
HSV
hsv(123, 16%, 94%)
LAB
lab(90.99% -19.00 13.37)
LCH
lch(90.99% 23.23 144.87)
CMYK
cmyk(16%, 0%, 15%, 6%)

Etymology

Serviceable
adjective

Latin servītium, service — adjectival suffix -able. As a color modifier, serviceable implies a clear-and-fit-for-purpose-and-durable quality where the hue carries the visual register of long-lasting-and-functional everyday-use design. Sits at the crisp-and-functional end of the grid, parallel to practical and utilitarian in usage.

Kona
noun

The leeward (western) coast of the Big Island of Hawaii — and the deep blue-green of Kona's Kealakekua Bay and Honaunau coves. Kona color refers to the bay water at midday: a saturated, slightly cool deep blue-green with the optical clarity of cold Pacific water against volcanic black-sand beaches.

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.

#c9efcb
Original
#f0e8c9
Protanopia
#eae4cd
Deuteranopia
#c5ede5
Tritanopia
#e4e4e4
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
1.26:1
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
16.69:1

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