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Occluded Curcuma

#121a02
Notes

Occluded Curcuma (#121A02) is a deep lime 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 (80°, 86%, 5%) 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 indigo. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#121a02
RGB
rgb(18, 26, 2)
HSL
hsl(80, 86%, 5%)
HWB
hwb(80 1% 90%)
OKLCH
oklch(20.3% 0.046 124.7)
P3
color(display-p3 0.0769 0.1011 0.0181)
HSV
hsv(80, 92%, 10%)
LAB
lab(7.87% -8.14 10.82)
LCH
lch(7.87% 13.54 126.95)
CMYK
cmyk(31%, 0%, 92%, 90%)

Etymology

Occluded
adjective

Latin occludere, to close up — past-participle of occlude. As a color modifier, occluded implies a hue blocked-and-dimmed by an intervening physical barrier. Sits at the deep-and-obscured end of the grid, parallel to eclipsed and cloaked but more clinical in register.

Curcuma
noun

The Linnaean genus name for turmeric — Curcuma longa — used in pigment vocabulary for the pure curcumin yellow extracted from the rhizome. Curcuma as a color refers specifically to the pigment isolated from C. longa: a saturated, slightly cool deep yellow with the matte finish of plant-derived pigment. The botanical-Latin cousin of haldi.

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.

#121a02
Original
#1c1800
Protanopia
#1b1703
Deuteranopia
#131815
Tritanopia
#171717
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
17.88:1
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
1.17:1

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
##121A02
Display P3
Display P3
color(display-p3 0.0769 0.1011 0.0181)
Inside sRGBOKLCH chroma 0.046

This color sits well within the sRGB cube. P3 and sRGB share the gray axis and most desaturated tones, so a P3 display renders this identically to an sRGB display.

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