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Truthful Nokchaek

#1b5b1d
Notes

Truthful Nokchaek (#1B5B1D) 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 (122°, 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 violet. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#1b5b1d
RGB
rgb(27, 91, 29)
HSL
hsl(122, 54%, 23%)
HWB
hwb(122 11% 64%)
OKLCH
oklch(41.6% 0.114 143.6)
HSV
hsv(122, 70%, 36%)
LAB
lab(33.57% -33.93 29.11)
LCH
lch(33.57% 44.71 139.37)
CMYK
cmyk(70%, 0%, 68%, 64%)

Etymology

Truthful
adjective

Old English trēowth, truth — adjectival suffix -ful. As a color modifier, truthful implies a clear-and-honest-and-direct quality where the hue carries the visual register of accurate-and-faithful-representation declaration. Sits at the crisp-and-honest end of the grid, parallel to candid and honest in usage.

Nokchaek
noun

The Korean word for green — used in the nokcha (green tea) tradition of Korean Buddhist monastery culture and the deep green of Korean ondol heated-floor textile dyes. The color refers to fresh-brewed Korean nokcha: a saturated, slightly cool deep green with the optical clarity of unfermented tea liquor.

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.

#1b5b1d
Original
#5d5216
Protanopia
#554d22
Deuteranopia
#0c584e
Tritanopia
#494949
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
8.20:1
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
2.56:1

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