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Refreshing Kona

#1b5b2c
Notes

Refreshing Kona (#1B5B2C) is a deep green with an earthy character. It leans grounded and natural, the kind of color that plays well with wood, clay, linen, and warm neutrals. Its HSL profile (136°, 54%, 23%) places it in the balanced band at a dark lightness. It works well as a headline, icon, or deep background in an otherwise light layout, pairing cleanly with cream, bone, and warm neutrals. For a confident two-color system, pair it with its complementary magenta. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#1b5b2c
RGB
rgb(27, 91, 44)
HSL
hsl(136, 54%, 23%)
HWB
hwb(136 11% 64%)
OKLCH
oklch(41.8% 0.100 148.8)
P3
color(display-p3 0.1813 0.3517 0.1921)
HSV
hsv(136, 70%, 36%)
LAB
lab(33.77% -31.68 21.25)
LCH
lch(33.77% 38.14 146.15)
CMYK
cmyk(70%, 0%, 52%, 64%)

Etymology

Refreshing
adjective

Old French refreschir, to make fresh again — present-participle of refresh. As a color modifier, refreshing implies a clear-and-cool-and-revitalizing quality, the crisp color of Cornish-coast and Hebridean-island fresh-sea-air-and-cool-water revitalization. Sits at the crisp-and-cool end of the grid, parallel to fresh and bracing 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

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.

#1b5b2c
Original
#5c5328
Protanopia
#544d2f
Deuteranopia
#045950
Tritanopia
#4a4a4a
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).
AAAon White
8.14:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon Black
2.58:1

Wide gamut

Display P3 representation

The CSS Color 4 wide-gamut form of this color. Both swatches render the same color on every display — the P3 form only diverges from sRGB when a designer pushes channels outside sRGB's reach.

sRGB hex
sRGB hex
##1B5B2C
Display P3
Display P3
color(display-p3 0.1813 0.3517 0.1921)
P3 has subtle headroomOKLCH chroma 0.100

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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