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Starched Lemon

#645d16
Notes

Starched Lemon (#645D16) is a deep yellow 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 (55°, 64%, 24%) 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 blue. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#645d16
RGB
rgb(100, 93, 22)
HSL
hsl(55, 64%, 24%)
HWB
hwb(55 9% 61%)
OKLCH
oklch(47.1% 0.089 103.6)
P3
color(display-p3 0.3875 0.3657 0.1401)
HSV
hsv(55, 78%, 39%)
LAB
lab(38.89% -6.08 39.25)
LCH
lch(38.89% 39.71 98.80)
CMYK
cmyk(0%, 7%, 78%, 61%)

Etymology

Starched
adjective

Old English stercan, to stiffen — past-participle of starch. As a color modifier, starched implies a clear-and-stiff-and-formal quality, the crisp color of Edwardian-period formal-evening-shirt-and-collar starched-and-pressed dress-attire. Sits at the crisp-and-finished end of the grid, parallel to pressed and ironed in usage.

Lemon
noun

Citrus limon, the cultivated yellow citrus of southern Italian and North African groves. Originally a hybrid of citron and bitter orange, the lemon spread through the Mediterranean during the medieval Arab agricultural revolution. The color refers to the skin of a ripe Eureka lemon: a clean, slightly green-shifted yellow with the matte finish of citrus rind. The fruit's acidity gave English the figurative lemon — something that disappoints — separately from the color.

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.

#645d16
Original
#665a09
Protanopia
#685d1b
Deuteranopia
#6c564f
Tritanopia
#595959
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).
AAon White
6.73:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon Black
3.12:1

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
##645D16
Display P3
Display P3
color(display-p3 0.3875 0.3657 0.1401)
P3 has subtle headroomOKLCH chroma 0.089

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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