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Bold Hyssop Ruby

#b73f4a
Notes

Bold Hyssop Ruby (#B73F4A) is a true red 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 (355°, 49%, 48%) 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 cyan. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#b73f4a
RGB
rgb(183, 63, 74)
HSL
hsl(355, 49%, 48%)
HWB
hwb(355 25% 28%)
OKLCH
oklch(54.0% 0.155 18.7)
P3
color(display-p3 0.6639 0.2801 0.3016)
HSV
hsv(355, 66%, 72%)
LAB
lab(44.40% 49.14 20.32)
LCH
lch(44.40% 53.18 22.47)
CMYK
cmyk(0%, 66%, 60%, 28%)

Etymology

Bold
adjective

Old English beald, brave, courageous — a quality word that crossed over to color in the late seventeenth century. Bold describes a color that asserts itself: high saturation combined with mid lightness, where the hue presents itself without compromise. Sits at the center of the bold-bucket grid, near strong and rich. Closer to a presence word than a pigment word.

Hyssop
modifier

Hebrew ēzōb, Biblical-purifying-herb. As a color modifier, hyssop implies a Biblical-purifying-herb-and-monastic-physic-garden quality, the visual register of monastic-physic-garden-and-Biblical-hyssop hand-Biblical-purifying-herb-and-monastic-physic-garden monastic-physic-garden-and-Biblical-hyssop-and-Cluniac-cloister hyssop-and-Biblical-purifying-herb surfaces under monastic-physic-garden-and-Biblical-hyssop-and-Cluniac-cloister Cluny-and-Saint-Gall-physic-garden monastic-physic-light. Sits at the modifier-and-flavor end of the grid, parallel to savory and balm in usage.

Ruby
noun

From the Latin ruber — simply, red. The gemstone is a chromium-tinged corundum, harder than anything in nature except diamond, and so saturated that a fine Burmese pigeon's blood ruby at auction outpaces a comparable diamond by weight. The color borrows the gem's confidence: a clear, glassy red without the brown of garnet or the blue of crimson.

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.

#b73f4a
Original
#5d594a
Protanopia
#7c7247
Deuteranopia
#c82644
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
5.49:1
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
3.82:1

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
##B73F4A
Display P3
Display P3
color(display-p3 0.6639 0.2801 0.3016)
P3 has subtle headroomOKLCH chroma 0.155

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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