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Twinkling Berg Goldenrod

#b9c024
Notes

Twinkling Berg Goldenrod (#B9C024) is a true yellow with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (63°, 68%, 45%) places it in the balanced band at a mid lightness. It works across type, buttons, and borders, saturated enough to feel deliberate but balanced enough to not fight the rest of the palette. 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
#b9c024
RGB
rgb(185, 192, 36)
HSL
hsl(63, 68%, 45%)
HWB
hwb(63 14% 25%)
OKLCH
oklch(77.7% 0.164 112.4)
P3
color(display-p3 0.7305 0.7521 0.2773)
HSV
hsv(63, 81%, 75%)
LAB
lab(74.91% -19.77 69.96)
LCH
lch(74.91% 72.70 105.78)
CMYK
cmyk(4%, 0%, 81%, 25%)

Etymology

Twinkling
adjective

Old English twinclian, to wink rapidly — present-participle of twinkle. As a color modifier, twinkling implies a saturated-and-rapid-flicker-reflective quality, the bright color of Christmas-fairy-light and night-sky-star atmospheric-scintillation. Sits at the bright-and-reflective end of the grid, parallel to sparkling and glittering in usage.

Berg
modifier

Norwegian isberg, mountain-of-ice. As a color modifier, berg implies an iceberg-and-Antarctic-tabular-ice quality, the visual register of Antarctic-and-Greenland-iceberg hand-iceberg-and-Antarctic-tabular-ice Antarctic-and-Greenland-iceberg-and-Larsen-Ice-Shelf berg-and-iceberg-and-Antarctic-tabular-ice surfaces under Antarctic-and-Greenland-iceberg-and-Larsen-Ice-Shelf Ross-Sea-and-Weddell-Sea-and-Disko-Bay tabular-iceberg-light. Sits at the modifier-and-weather end of the grid, parallel to floe and icicle in usage.

Goldenrod
noun

Solidago, the late-summer wildflower of North American meadows whose tall sprays of small yellow flowers signal the end of the growing season. The color refers to the flower head at full bloom: a warm, slightly muted yellow-orange with the matte finish of small clustered florets. Cooler than mustard, deeper than dandelion. The state flower of Kentucky and Nebraska, a pollinator magnet, and the original native dye for early American homespun.

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.

#b9c024
Original
#cfb700
Protanopia
#d0ba34
Deuteranopia
#c6b4a4
Tritanopia
#b3b3b3
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).
Failon White
1.98:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAAon Black
10.63:1

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
##B9C024
Display P3
Display P3
color(display-p3 0.7305 0.7521 0.2773)
P3 has subtle headroomOKLCH chroma 0.164

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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