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Bold Pang Ruby

#a42123
Notes

Bold Pang Ruby (#A42123) is a true red with a warm character. It leans warm, pulling light toward red, orange, and yellow. Naturally inviting, it suits editorial and hospitality contexts. Its HSL profile (359°, 66%, 39%) 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
#a42123
RGB
rgb(164, 33, 35)
HSL
hsl(359, 66%, 39%)
HWB
hwb(359 13% 36%)
OKLCH
oklch(47.0% 0.167 25.9)
P3
color(display-p3 0.5909 0.1793 0.1631)
HSV
hsv(359, 80%, 64%)
LAB
lab(36.18% 52.06 33.16)
LCH
lch(36.18% 61.72 32.49)
CMYK
cmyk(0%, 80%, 79%, 36%)

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.

Pang
modifier

Middle English pang, sudden-sharp-pain. As a color modifier, pang implies a sudden-and-piercing-and-sharp quality, the visual register of Petrarchan-sonnet-and-courtly-love-pang hand-sudden-and-piercing-and-sharp Petrarchan-sonnet-and-courtly-love-and-troubadour-lyric panged-and-sudden-and-piercing-and-sharp surfaces under Petrarchan-sonnet-and-courtly-love-and-troubadour-lyric pierced-and-yearning-and-stricken candlelit-poet-light. Sits at the modifier-and-mood end of the grid, parallel to ache and throb 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.

#a42123
Original
#4a4321
Protanopia
#6b5f1d
Deuteranopia
#b50024
Tritanopia
#3d3d3d
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
7.45:1
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
2.82:1

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
##A42123
Display P3
Display P3
color(display-p3 0.5909 0.1793 0.1631)
P3 has subtle headroomOKLCH chroma 0.167

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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