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Senatorial Spinach

#1f6404
Notes

Senatorial Spinach (#1F6404) is a deep green 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 (103°, 92%, 20%) places it in the highly saturated band at a dark 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 violet. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#1f6404
RGB
rgb(31, 100, 4)
HSL
hsl(103, 92%, 20%)
HWB
hwb(103 2% 61%)
OKLCH
oklch(44.2% 0.139 139.6)
HSV
hsv(103, 96%, 39%)
LAB
lab(36.77% -38.33 41.38)
LCH
lch(36.77% 56.40 132.80)
CMYK
cmyk(69%, 0%, 96%, 61%)

Etymology

Senatorial
adjective

Latin senātōrius, of the senator — adjectival suffix. As a color modifier, senatorial implies a saturated-and-aristocratic-and-Roman-Republic quality, the deep-rich color of Roman-Senate toga praetexta purple-bordered ceremonial-citizen-class livery. Sits at the bold-and-aristocratic end of the grid, parallel to patrician and imperial.

Spinach
noun

Spinacia oleracea, the Persian leaf cultivated in China and the Mediterranean since the seventh century, popularized in twentieth-century America by Popeye and a misplaced decimal point in an iron-content study. The color refers to fresh raw spinach leaves: a saturated, slightly yellow-shifted green with the matte finish of a crinkled-savoy leaf. Deeper than apple, cooler than olive, with the kitchen weight of a vegetable that wilts to a quarter its raw volume.

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.

#1f6404
Original
#675a00
Protanopia
#5f5413
Deuteranopia
#146054
Tritanopia
#4e4e4e
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
7.28:1
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
2.88:1

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