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Commanding Rhodonite

#cb37a7
Notes

Commanding Rhodonite (#CB37A7) is a true magenta with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (315°, 59%, 51%) 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 green. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#cb37a7
RGB
rgb(203, 55, 167)
HSL
hsl(315, 59%, 51%)
HWB
hwb(315 22% 20%)
OKLCH
oklch(59.5% 0.216 339.6)
P3
color(display-p3 0.7340 0.2642 0.6381)
HSV
hsv(315, 73%, 80%)
LAB
lab(49.76% 67.85 -27.83)
LCH
lch(49.76% 73.34 337.70)
CMYK
cmyk(0%, 73%, 18%, 20%)

Etymology

Commanding
adjective

Latin commendāre, to entrust / order — present-participle of command. As a color modifier, commanding implies a saturated-and-authoritative quality where the hue claims visual leadership of its surrounding palette. Sits at the bold-and-authoritative end of the grid, parallel to authoritative and imperial in usage.

Rhodonite
noun

Manganese-silicate mineral with deep-pink-to-rose-red coloration, sourced from the Sverdlovsk deposits of the Russian Urals and the Vagner mine of Sweden. Rhodonite color refers to a polished Sverdlovsk rhodonite massive specimen: a saturated, slightly cool deep magenta with the matte finish of manganese-rich silicate. The Greek genus name rhódon (rose) refers to the characteristic deep-pink color of crystalline specimens.

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.

#cb37a7
Original
#4067aa
Protanopia
#717fa4
Deuteranopia
#d73c6b
Tritanopia
#5f5f5f
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
4.52:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon Black
4.64:1

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
##CB37A7
Display P3
Display P3
color(display-p3 0.7340 0.2642 0.6381)
P3 has visible headroomOKLCH chroma 0.216

This color is chromatic enough that authoring it as P3 native (instead of clamping to sRGB) gives a perceptibly more saturated render on wide-gamut displays — modern Macs, iPhones, iPads, and most recent OLED laptops.

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