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Bold Sumer Rose

#c01740
Notes

Bold Sumer Rose (#C01740) is a true red with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (345°, 79%, 42%) places it in the highly saturated band at a mid 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 teal. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#c01740
RGB
rgb(192, 23, 64)
HSL
hsl(345, 79%, 42%)
HWB
hwb(345 9% 25%)
OKLCH
oklch(52.1% 0.197 16.1)
HSV
hsv(345, 88%, 75%)
LAB
lab(41.52% 63.52 23.10)
LCH
lch(41.52% 67.59 19.98)
CMYK
cmyk(0%, 88%, 67%, 25%)

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.

Sumer
modifier

Akkadian Šumeru, Sumer. As a color modifier, sumer implies an ancient-Mesopotamian-and-cuneiform quality, the visual register of Sumerian-Ur-and-Uruk hand-built ziggurat-and-cuneiform-tablet bronze-age Mesopotamian city-state surfaces under Sumerian-Mesopotamian Ur-and-Uruk bronze-age city-state sun-baked-mud-brick light. Sits at the modifier-and-cultural end of the grid, parallel to akkad and median in usage.

Rose
noun

The Latin rosa, the Greek rhodon, the Persian gul — every European language has a different name for the same flower and the same color. Rose covers the spectrum from blush to fuchsia depending on the cultivar, but in pigment shorthand it means a cool, slightly bluish red — the inside of a damask petal, the dye that washes out of madder root.

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.

#c01740
Original
#4f4c40
Protanopia
#786e3b
Deuteranopia
#d3002b
Tritanopia
#3e3e3e
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
6.11:1
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
3.44:1

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